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Fig. 4. PPS mean crestal bone level change plotted...

Fig. 4. PPS mean crestal bone level change plotted against time (mean, 95 % CI) Fig. 4. PPS mean crestal bone level change plotted against time (mean, 95 % CI)

Fig. 3. Participant flow diagram : A randomized, 1...

Fig. 3. Participant flow diagram Fig. 3. Participant flow diagram

Fig. 2. Restorative flow diagram : A randomized, 1...

Fig. 2. Restorative flow diagram Fig. 2. Restorative flow diagram

Fig. 1. Clinical pictures in each procedure. a Bef...

Fig. 1. Clinical pictures in each procedure. a Before implant placement. b After abutment connection. c Temporary prosthesis. d Final prosthesis Fig. 1. Clinical pictures in each procedure. a Before implant placement. b After abutment connection. c Temporary prosthesis. d Final prosthesis

Table 5 Patient satisfaction at 6 and 12 months, ...

  Indicator Prosthetic comforta Appearanceb Ability to chewc Ability to tasted Fittinge General satisfactionf Treatment arm ...

Table 4 Mean crestal bone level changes, in early ...

Treatment arm Summary statistics Baseline 6 months Change from baseline to 6 months ...

Table 3 Patient demographics and other baseline ch...

Characteristics Early loading arm Conventional loading arm Total (N = 38) (N =...

Table 2 Loading criteria applied at implant placem...

Loading criteria 1 Loading criteria 2 • Sufficient oral hygiene • At least 1 mm bone volume around the implanta • No major dehiscence (

Table 1 Inclusion criteria and exclusion criteria ...

Inclusion criteria Age over 20 Patient who have missing teeth in premolar or molar site Good oral hygiene Predicted implant site has 1–3 quality of bone densityand enough quantity of bone Extraction socket in predicted implant site is completely healed (16 weeks or more) ...

About this article : A randomized, 12-month contro...

Dard, M., Shiota, M., Sanda, M. et al. A randomized, 12-month controlled trial to evaluate non-inferiority of early compared to conventional loading of modSLA implants in single tooth gaps. Int J Implant Dent 2, 10 (2016). https://doi.org/10.1186/s40729-016-0040-8 Download citation Received: 25 September 2015 Accepted: 23 March 2016 Published: 04 April 2016 DOI: https://d...

Rights and permissions : A randomized, 12-month co...

Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were...

Additional information : A randomized, 12-month co...

Michel Dard, Makoto Shiota, Minoru Sanda, Yasutomo Yajima, Hideshi Sekine, and Shohei Kasugai state that there are no conflicts of interest. MD mainly prepared the manuscript and figures. MS arranged this study, participated in its design and coordination, and helped to draft the manuscript. YY, HS, and SK managed the data collection from each centers of Tokyo Dental College Chiba Hospital (TDCC)...

Author information : A randomized, 12-month contro...

College of Dentistry, New York University, New York, NY, USA Michel Dard Tokyo Medical and Dental University, Tokyo, Japan Makoto Shiota, Minoru Sanda & Shohei Kasugai Suidobashi Hospital, Tokyo Dental College, Tokyo, Japan Yasutomo Yajima School of Dentistry, Ohu University, Fukushima, Japan Hideshi Sekine Department of Oral Implantology and Regenerative Dental Medicine, Tokyo Medical ...

Acknowledgements : A randomized, 12-month controll...

This trial was sponsored by Straumann Japan KK. The authors would like to acknowledge the assistance of Eusaku Watanabe and Nariyuki Maezawa (both Straumann Japan KK) for their contributions to the study.

References : A randomized, 12-month controlled tri...

Download references

References : A randomized, 12-month controlled tri...

Krebs M, Schmenger K, Neumann K, Weigl P, Moser W, Nentwig GH. Long-term evaluation of ANKYLOS® dental implants, part I: 20-year life table analysis of a longitudinal study of more than 12,500 implants. Clin Implant Dent Relat Res. 2013. doi:10.1111/cid.12154. Lops D, Bressan E, Pisoni G, Cea N, Corazza B, Romeo E. Short implants in partially edentulous maxillae and mandibles: a 10 to 20 years ...

References : A randomized, 12-month controlled tri...

Salvi GE, Gallini G, Lang NP. Early loading (2 or 6 weeks) of sandblasted and acid-etched (SLA) ITI implants in the posterior mandible. A 1-year randomised controlled clinical trial. Clin Oral Implants Res. 2004;15:142–9. El-Sheikh AM, Shihabuddin OF, Ghoraba SM. A prospective study of early loaded single implant-retained mandibular overdentures: preliminary one-year results. Int J Dent. 2012. ...

References : A randomized, 12-month controlled tri...

Morton D, Bornstein MM, Wittneben JG, et al. Early loading after 21 days healing of nonsubmerged titanium implants with a chemically modified sandblasted and acid-etched surface: two-year results of a prospective two-center study. Clin Implant Dent Relat Res. 2010;12:9–17. Cochran DL, Jackson JM, Bernard JP, et al. A 5-year prospective multicenter study of early loaded titanium implants with a ...

References : A randomized, 12-month controlled tri...

Bornstein MM, Wittneben JG, Brägger U, Buser D. Early loading at 21 days of non-submerged titanium implants with a chemically modified sandblasted and acid-etched surface: 3-year results of a prospective study in the posterior mandible. J Periodontol. 2010;81:809–18. Ganeles J, Zöllner A, Jackowski J, ten Bruggenkate C, Beagle J, Guerra F. Immediate and early loading of Straumann implants wit...

References : A randomized, 12-month controlled tri...

Bornstein MM, Valderrama P, Jones AA, Wilson TG, Seibl R, Cochran DL. Bone apposition around two different sandblasted and acid-etched titanium implant surfaces: a histomorphometric study in canine mandibles. Clin Oral Implants Res. 2008;19:233–41. Lai HC, Zhuang LF, Zhang ZY, Wieland M, Liu X. Bone apposition around two different sandblasted, large-grit and acid-etched implant surfaces at site...

References : A randomized, 12-month controlled tri...

Esposito M, Grusovin MG, Maghaireh H, Worthington HV. Interventions for replacing missing teeth: different times for loading dental implants. Cochrane Database of Syst Rev. 2013;3:CD003878. Esposito M, Grusovin MG, Willings M, Coulthard P, Worthington HV. The effectiveness of immediate, early, and conventional loading of dental implants: a Cochrane systematic review of randomized controlled clini...

References : A randomized, 12-month controlled tri...

Blanes RJ, Bernard JP, Blanes ZM, Belser UC. A 10-year prospective study of ITI dental implants placed in the posterior region. I: clinical and radiographic results. Clin Oral Implants Res. 2007;18:699–706. Covani U, Chiappe G, Bosco M, Orlando B, Quaranta A, Barone A. A 10-year evaluation of implants placed in fresh extraction sockets: a prospective cohort study. J Periodontol. 2012;83:1226–...

Conclusions : A randomized, 12-month controlled tr...

In conclusion, this study demonstrated that early implant loading was non-inferior to conventional implant loading in terms of crestal bone level change in a Japanese patient population in short follow-up period and single tooth gaps in molar regions. High implant survival and patient satisfaction rates, and a good safety profile, were also achieved.

Discussion : A randomized, 12-month controlled tri...

Early loading of the implants showed a good safety profile, with a similar incidence in AEs between the early and conventional loading groups. The benefits to the patient for the early loading procedure were demonstrated by the patient satisfaction question “What does the patient think about the time taken until occlusal loading was started after implantation surgery?” All patients in the earl...

Discussion : A randomized, 12-month controlled tri...

The implant survival rate of 100 % after 12 months is also in line with the results from previous studies with chemically modified SLA implants in various situations, including 100 % survival in early loading of mandibular overdentures [55], 100 % survival in single-tooth applications in the anterior maxilla [56], 96.8 % with maxillary sinus floor augmentation [57], and 98 and 97 % with imme...

Discussion : A randomized, 12-month controlled tri...

This was a randomized, controlled, multicenter clinical trial to investigate whether the outcomes for chemically modified SLA implants in terms of change in crestal bone level from implant surgery to 6 months were non-inferior with early loading (25 ± 3 days) compared to conventional loading (13 ± 1 weeks). The difference in mean crestal bone level change between the early loading and...

Results : A randomized, 12-month controlled trial ...

In the PPS and FAS, the implant survival rate was 100 % after 12 months. In the PPS, the implant success rate was 100 % at all time points in both the conventional and early loading arms; however, in the FAS, the success rate in the conventional loading arm was 100 % at all time points, while in the early loading arm, success was 100 % at suture removal at 12-month follow-up and 95 % at the ...

Results : A randomized, 12-month controlled trial ...

The study enrolled 84 Japanese patients who had single missing tooth in the molar region. Since four patients were withdrawn due to the exclusion criteria (systemic disease, adjacent teeth with probing pocket depth deeper than 4 mm, mental disorder, and bone deficiency, respectively), 80 patients underwent implant placement. Two further patients were withdrawn before randomization because the ins...

Methods : A randomized, 12-month controlled trial ...

In addition, periodontal examination, in the form of probing depth (PD) and bleeding on probing (BoP), was performed at pre-screening and at the 12-month follow-up. Descriptive summary statistics were computed for all parameters, and quantitative parameters were described using mean, standard deviation, median, quartiles, minimum, and maximum. For qualitative variables, absolute and relative freq...

Methods : A randomized, 12-month controlled trial ...

The primary endpoint was a change of crestal bone level between implant surgery (baseline) and final restoration (6 months), assessed by measuring the distance from the implant shoulder to the first bone-to-implant contact both mesially and distally to the implant. Bone level was measured by a single reader on standardized periapical radiographs taken at baseline (day 0), suture removal (7–14...

Methods : A randomized, 12-month controlled trial ...

When a patient fulfilled all inclusion criteria and had no exclusion criteria, then he/she got implant surgery and checked the condition met first criteria for loading (loading criteria 1 (LC1)) (Table 2). All patients received Ti grade IV Straumann Standard Plus Regular Neck (SP RN) implants, 4.1 mm in diameter and 8, 10, or 12 mm in length, with SLActive® surface (Institut Straumann AG, Bas...

Methods : A randomized, 12-month controlled trial ...

This study was designed as a randomized, controlled, multicenter clinical trial to evaluate non-inferiority of early loading compared to conventional loading of dental implants with a chemically modified SLA surface placed in single tooth gaps, involving three centers in Japan (Tokyo Medical and Dental University (TMDU), Tokyo Dental College Chiba Hospital (TDCC), and Tokyo Dental College Suidobas...

Background : A randomized, 12-month controlled tri...

Early loading protocols have become relatively common procedures in many countries for implant restoration, but the procedure is much less common in Japan. The purpose of this study, therefore, was to investigate whether the chemically modified SLA implant with early loading was non-inferior to conventional loading, based on the amount of crestal bone change between baseline and 6 months after su...

Background : A randomized, 12-month controlled tri...

The use of dental implants to replace missing or compromised teeth has been well documented clinically over many years. High implant survival rates have been demonstrated for over 10 [1–3], 15 [4], and 20 years [5, 6]. Long-term survival rates for single-tooth implants have been shown to be greater than those for tooth-supported restorations, e.g., fixed partial dentures (FPDs) [7, 8]. Good lon...

Abstract : A randomized, 12-month controlled trial...

The aim of the study was to evaluate whether early loading of implants with a chemically modified sandblasted, large-grit, acid-etched (SLA) (SLActive®) surface was non-inferior to conventional loading in terms of change in crestal bone level. This was a randomized, controlled, multicenter study. Patients requiring single-tooth rehabilitation in the posterior maxilla or mandible received implant...

Fig. 3. Example of another case involved in the s...

Fig. 3. Example of another case involved in the study. a Preoperative view –premolars and molars are missing in left mandible. b Preoperative CT scan. The width of the ridge was around 4 mm. c Baseline periapical radiograph. Four narrow diameter implants were placed to restore the area. d Buccal view of the final full-contour zirconia restoration. e Periapical radiograph at 1 year after loa...

Fig. 2. Case 1: Example of one case involved in t...

Fig. 2. Case 1: Example of one case involved in the study. a Preoperative view of a partial edentulism in posterior mandible. b Preoperative CT scan. The width of the ridge was 4 mm. c Four narrow diameter implants were placed and left to a nonsubmerged healing. d Baseline periapical radiograph. e Buccal vieew of the final metal ceramic restoration. f Periapical radiograph at 1 year after loa...

Fig. 1. Characteristics of the implants used in t...

Fig. 1. Characteristics of the implants used in the study: a external macro-design of JDIcon Ultra S, 2.75 mm diameter implant and b external macro-design of JDEvolution S, 3.25 mm diameter implant Fig. 1. Characteristics of the implants used in the study: a external macro-design of JDIcon Ultra S, 2.75 mm diameter implant and b external macro-design of JDEvolution S, 3.25 mm diameter i...

Table 4 Comparison of mean bone levels (means ±...

Diameter 2.75 mm    Follow-up Mean bone level changes (mm) (n = 69) 0–6 months (95% CI) (n = 67) 0–12 months (95% CI) (n = 67) ...

Table 3 Comparison of mean bone levels (means ±...

Follow-up Mean bone level (mm) (n = 124) Time 0–6 months (95% CI) (n = 121) 0–12 months (95% CI) (n = 121) ...

Table 2 Dimensions (diameter and length) and final...

Length (mm) 8 18 (14.5%) 10 56 (45.2%) 11.5 ...

Table 1 Features of the subjects included in the s...

Number of patients 42 Males (%) 18 (42.9%) Females (%) 24 (57.1%) ...

About this article : Narrow implants (2.75 and 3.2...

Grandi, T., Svezia, L. & Grandi, G. Narrow implants (2.75 and 3.25 mm diameter) supporting a fixed splinted prostheses in posterior regions of mandible: one-year results from a prospective cohort study. Int J Implant Dent 3, 43 (2017). https://doi.org/10.1186/s40729-017-0102-6 Download citation Received: 23 March 2017 Accepted: 29 August 2017 Published: 08 September 2017 ...

Rights and permissions : Narrow implants (2.75 and...

Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were...

Ethics declarations : Narrow implants (2.75 and 3....

Tommaso Grandi serves as a consultant for JDentalCare. Luigi Svezia and Giovanni Grandi declare that they have no competing interests. Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Author information : Narrow implants (2.75 and 3.2...

Private practice, Via Contrada 323, 41126, Modena, Italy Tommaso Grandi & Luigi Svezia Department of Obstetrics, Gynecology and Pediatrics, University of Modena and Reggio Emilia, Modena, Italy Giovanni Grandi You can also search for this author in PubMed Google Scholar You can also search for this author in PubMed Google Scholar You can ...

References : Narrow implants (2.75 and 3.25 mm di...

Download references

References : Narrow implants (2.75 and 3.25 mm di...

Esposito M, Grusovin MG, Maghaireh H, Worthington HV. Interventions for replacing missing teeth: different times for loading dental implants (Review). Cochrane Database Syst Rev. 2013;(3):CD003878. https://doi.org/10.1002/14651858.CD003878.pub5. Esposito M, Grusovin MG, Felice P, Karatzopoulos G, Worthington HV, Coulthard P. The efficacy of horizontal and vertical bone augmentation procedures for...

Conclusions : Narrow implants (2.75 and 3.25 mm d...

Within the limits of this prospective cohort study, narrow-diameter implants (2.75 to 3.25 mm) can be successfully used as a minimally invasive alternative to horizontal bone augmentation in posterior mandible up to 1 year of function. This outcome could be related to the fact that these implants have been all splinted to other implants by a fixed prosthesis. These preliminary results must be co...

Discussion : Narrow implants (2.75 and 3.25 mm di...

On the one hand, due to the small sample size of this study and moreover, the short follow-up (only 1 year after loading), it would be hazardous to conclude that the placement of NDIs to support fixed prostheses in posterior mandible is a predictable treatment modality. In order to draw more reliable conclusions, we need to wait for longer follow-ups, since it may be possible that after several y...

Discussion : Narrow implants (2.75 and 3.25 mm di...

Dental implants with a reduced diameter are commonly used where bone width is narrow or in cases of restricted mesiodistal anatomy such as laterally maxillary and mandibular incisors. They could also be a viable alternative to bone augmentation especially in challenging situations such as the posterior regions of the mandible. While it has been shown that it is possible to horizontally augment bon...

Results : Narrow implants (2.75 and 3.25 mm diame...

The radiographic data are summarized in Tables 3 and 4. The group lost statistically significant marginal peri-implant bone at 6 months (−0.20; 95% C −0.14: −0.26, p 

Results : Narrow implants (2.75 and 3.25 mm diame...

Forty-eight patients were screened for eligibility, but six subjects were not included for the following reasons: five patients (10.4%) were hesitant to receive implant treatment, and one patient (2.1%) was treated with intravenous amino-bisphosphonates. Forty-two patients were then considered eligible and were consecutively enrolled in the study. All patients were treated according to the allocat...

Methods : Narrow implants (2.75 and 3.25 mm diame...

Primary outcome measures were as follows: Implant failure: evaluated as implant mobility and removal of stable implants dictated by progressive marginal bone loss or infection. The stability of each implant was measured manually by tightening the abutment screw with a wrench delivering a torque of 20 Ncm. Implant stability assessment was performed at delivery of definitive crowns (3 months afte...

Methods : Narrow implants (2.75 and 3.25 mm diame...

The present prospective study was conducted at a private practice (Tommaso Grandi, Modena) in Italy between October 2014 and January 2016. Any patient with partial edentulism in posterior regions of mandible (premolar/molar areas), requiring one multiple tooth implant-supported restoration (2-, 3-, or 4-unit bridge), having a residual bone height of at least 8 mm and a thickness of at least 4 m...

Background : Narrow implants (2.75 and 3.25 mm di...

The aim of this cohort study was to evaluate the outcome of narrow-diameter implants (2.75 and 3.25 mm diameter) used as definitive implants in patients with insufficient bone ridge thickness for placing standard-diameter implants in posterior regions of the mandible. The present study reports the clinical outcome up to 1 year after loading. It is planned to follow up this patients’ cohort to ...

Background : Narrow implants (2.75 and 3.25 mm di...

Historically, implants have been used and documented mainly with diameters between 3.7 and 4.3 mm. Employing these diameters for numerous indications, scientifically substantiated treatment protocols with excellent long-term results have been established [1]. One disadvantage of a standard-diameter implant is the fact that, in clinical use, the available horizontal crestal dimensions of the alveo...

Abstract : Narrow implants (2.75 and 3.25 mm diam...

Can multiple splinted narrow-diameter implants be used as definitive implants in patients with insufficient bone ridge thickness in posterior regions of the mandible? With this aim, we evaluated their outcomes in this set up to 1 year after loading. Forty-two patients with a mean age of 61.3 years old (range 49–73) in need of fixed prosthetic implant-supported rehabilitations in the posterior...

Figure 3. Example of another case involved in the ...

  Figure 3. Example of another case involved in the study. a Preoperative view –premolars and molars are missing in left mandible. b Preoperative CT scan. The width of the ridge was around 4 mm. c Baseline periapical radiograph. Four narrow diameter implants were placed to restore the area. d Buccal view of the final full-contour zirconia restoration. e Periapical radiograph at 1...

Figure 2. Case 1: Example of one case involved in ...

  Figure 2. Case 1: Example of one case involved in the study. a Preoperative view of a partial edentulism in posterior mandible. b Preoperative CT scan. The width of the ridge was 4 mm. c Four narrow diameter implants were placed and left to a nonsubmerged healing. d Baseline periapical radiograph. e Buccal vieew of the final metal ceramic restoration. f Periapical radiograph at ...

Table 4 Comparison of mean bone levels (means ± S...

Diameter 2.75 mm    Follow-up Mean bone level changes (mm) (n = 69) 0–6 months (95% CI) (n = 67) 0–12 months (95% CI) (n = 67) p inter-groups  Baseline 0.02 ± 0.07 −0.18 (−0.09; −0.27) −0.47 (−0.27; −0.67) p = 0.786  6 months 0.20 ± 0.12 p intra-group  12 months 0.49 ± 0.30 p 

Table 2 Dimensions (diameter and length) and final...

Length (mm) 8 18 (14.5%) 10 56 (45.2%) 11.5 43 (34.7%) 13 7 (5.6%) Diameter (mm) 2.75 69 (55.6%) 3.25 55 (44.4%) Insertion torque (Ncm) 30 21 (16.9%) 35 16 (12.9%) 40 10 (8.1%) 45 11 (8.9%) 50 32 (25.8%) 55 7 (5.6%) 60 16 (12.9%) 65 5 (4.1%) 70 6 (4.8%)

Table 1 Features of the subjects included in the s...

Number of patients 42 Males (%) 18 (42.9%) Females (%) 24 (57.1%) Mean age at insertion (range) 62.6 (49–73) Smokers (less than 10 cigarettes/die) 12 (28.6%) Diseases in history  Controlled diabetes type 2 11 (26.2%)  Hypertension 19 (45.2%) Site of insertion  Premolar 81 (65.3%)  Molar 43 (34.7%) Opposite dentition ...

Figure 1. Characteristics of the implants used in ...

  Figure 1. Characteristics of the implants used in the study: a external macro-design of JDIcon Ultra S, 2.75 mm diameter implant and b external macro-design of JDEvolution S, 3.25 mm diameter implant

References: Narrow implants supporting a fixed spl...

References Esposito M, Grusovin MG, Maghaireh H, Worthington HV. Interventions for replacing missing teeth: different times for loading dental implants (Review). Cochrane Database Syst Rev. 2013;(3):CD003878. https://doi.org/10.1002/14651858.CD003878.pub5. Esposito M, Grusovin MG, Felice P, Karatzopoulos G, Worthington HV, Coulthard P. The efficacy of horizontal and vertical bone augmenta...

Discussion: Narrow implants supporting a fixed spl...

Klein et al., in a recent systematic review, reported that the survival rate of implants with a diameter of

Discussion: Narrow implants supporting a fixed spl...

Discussion Dental implants with a reduced diameter are commonly used where bone width is narrow or in cases of restricted mesiodistal anatomy such as laterally maxillary and mandibular incisors. They could also be a viable alternative to bone augmentation especially in challenging situations such as the posterior regions of the mandible. While it has been shown that it is possible to horizo...

Results: Narrow implants supporting a fixed splint...

Results Forty-eight patients were screened for eligibility, but six subjects were not included for the following reasons: five patients (10.4%) were hesitant to receive implant treatment, and one patient (2.1%) was treated with intravenous amino-bisphosphonates. Forty-two patients were then considered eligible and were consecutively enrolled in the study. All patients were treated according to ...

Methods : Narrow implants supporting a fixed splin...

Secondary outcome measures were as follows: Peri-implant marginal bone level changes: evaluated on intraoral radiographs taken with the paralleling technique at implant placement, 6 months and 1 year after loading. All measurements were taken by an independent assessor (LS). Radiographs were scanned, digitized in JPG format, converted to TIFF format with a 600 dpi resolution, and stored in...

Methods : Narrow implants supporting a fixed splin...

On the day of surgery, patients were treated under local anesthesia. Full-thickness crestal flaps were elevated with a minimal extension to reduce patient discomfort. The implant sites were prepared according to the procedure recommended by the implant manufacturer (JDentalCare, Modena, Italy). Tapered narrow-diameter implants titanium grade 5 (2.75 and 3.25 mm diameter, respectively, JDIcon Ult...

Methods : Narrow implants supporting a fixed splin...

Methods The present prospective study was conducted at a private practice (Tommaso Grandi, Modena) in Italy between October 2014 and January 2016. Any patient with partial edentulism in posterior regions of mandible (premolar/molar areas), requiring one multiple tooth implant-supported restoration (2-, 3-, or 4-unit bridge), having a residual bone height of at least 8 mm and a thickness of at ...

Background : Narrow implants supporting a fixed sp...

Background Historically, implants have been used and documented mainly with diameters between 3.7 and 4.3 mm. Employing these diameters for numerous indications, scientifically substantiated treatment protocols with excellent long-term results have been established [1]. One disadvantage of a standard-diameter implant is the fact that, in clinical use, the available horizontal crestal dimension...

Narrow implants supporting a fixed splinted prosth...

Narrow implants (2.75 and 3.25 mm diameter) supporting a fixed splinted prostheses in posterior regions of mandible: one-year results from a prospective cohort study   Abstract Background Can multiple splinted narrow-diameter implants be used as definitive implants in patients with insufficient bone ridge thickness in posterior regions of the mandible? With this aim, we evaluated their out...

Table 7 Meta-regression—effect of surface and le...

Type III tests of fixed effects   Num Den     Effect DF DF F value P Surface 1 11 0.84 0.3787 Length 7 11 0.97 0.4951 Location 1 11 0.00 0.9868

Table 6 Heterogeneity statistics

Q P   2.7008 0.7460   I 2 ci− ci+ 0.00 % 0.00 % 74.62 % τ 2 ci− ci+ 0.0000 0.0000 0.0069

Table 5 Meta-analysis implant data—pooled analys...

Authors Number Success ci− ci+ Weight (%) Polizzi et al. 38 0.921 0.810 0.990 12.71 Friberg et al. 13 1.000 0.872 1.000 4.46 Tawil and Younan 109 0.945 0.893 0.981 36.14 Khayat et al. 111 0.946 0.895 0.982 36.80 Deporter et al. 14 1.000 0.881 1.000 4.79 Schincaglia et al. 15 1.000 0.888 1.000 5.12   300 0.963 0.9...

Table 4 Implants used in the maxilla and mandible

Study Implant surface Implant type No. of implants in maxilla (no. failed) No. of implants in mandible (no. failed) % survived in maxilla % survived in mandible Khayat et al. 2001 Acid-etched, uncoated Zimmer (Screw vent, Paragon) 49 (2) 62 (4) 95.9 93.5 Deporter et al. 2001 Sintered porous Endopore (Innova Corp) 0 14 (0) – 100 Schincaglia et al. 2008 ...

Table 3 Wide machined implants

Study Implant surface Implant type Implant length No. of implants No. failed % survived Polizzi et al. 2000 Machined Brånemark (Nobel Biocare) 7 2 0 100 8.5 8 1 87.5 10 15 1 93.3 11.5 13 1 92.3 Friberg et al. 2000 Machined Brånemark (Nobel Biocare) 6 13 0 100 Tawil and Younan 2003 Machined Brånemark (Nobel Biocare) 6 16 0 ...

Table 2 Wide surface-treated Implants

Study Implant surface Implant type Implant length No. of implants No. failed % survived Khayat et al. 2001 Acid-etched, uncoated Zimmer (Screw vent, Paragon) 8 29 2 93.1 10 45 4 91.1 13 28 0 100 16 15 0 100 Deporter et al. 2001 Sintered porous Endopore (Innova Corp) 7 14 0 100 Schincaglia et al. 2008 Ti-unite Mark III WP (Nobel B...

Table 1 Wide-diameter implants

Implant diameter (mm) Implant lengths No. of implants (total) Implant type Implant surface Prospective clinical study Placement follow-up/mean (range) Implant survival (%) Age range (years) 4.7 8, 10, 13, 16 117 Zimmer (Screw vent, Paragon) Acid-etched, uncoated Khayat et al. 2001 Healing 3–6 months plus 17 months loading (11–21 months) 95 – 5.0 7 14 ...

Figure 3. Funnel plot

Figure 3. Funnel plot Figure 3. Funnel plot

Figure 2. Forest plot

  Figure 2. Forest plot

Figure 1. Study selection for wide-diameter implan...

  Figure 1. Study selection for wide-diameter implant articles

Conclusion : A meta-analysis on the effect of impl...

Conclusions This meta-analysis concluded that the location, length, and surface treatment of the wide-diameter implant do not significantly affect its survival. It is therefore suggested with caution that when the conditions of the implant site corresponds to the inclusion criteria used in our meta-analysis, choosing a wide implant in the posterior mandible or maxilla, where implant length may ...

Discussion : A meta-analysis on the effect of impl...

This suggests that the implant surface characteristics may have an impact on implant survival rate based on the implant diameter, and as the diameter of the implant is increased, as in the wide-diameter implant, this impact mConversely, Maló and Araújo Nobre reported significantly more failures for machined compared to surface-treated narrow (3.3-mm diameter) implants.ay not be stati...

Discussion : A meta-analysis on the effect of impl...

The present meta-analysis was limited to prospective clinical studies and utilized a rigorous inclusion and exclusion criteria. Studies included in the analysis were limited to cases in which implants placed in sites with adequate bone volume without grafting. Implants were placed in healed sites and loaded after at least 1–3 months of healing. All studies had at least 1-year follow-up. Pa...

Results : A meta-analysis on the effect of implant...

Results Of the six studies selected, three evaluated surface-treated implants and three machined implants (Table 1). The included studies all used similar criteria for implant survival, which was defined as the absence of mobility, pain, and radiolucent lesions. The implant survival was based on the percentage of implants evaluated, and the implant lengths in the studies range from 6 to 16 mm (Ta...

Materials and methods : A meta-analysis on the eff...

Screening and selection Two reviewers participated in selection of studies (MT and MP). At the initial phase of selection, abstracts and titles of articles were screened by one reviewer (MT) to exclude articles that clearly were not related to wide-diameter dental implants. The previously described inclusion and exclusion criteria were applied when including articles for full-text screening. When...

Materials and methods : A meta-analysis on the eff...

Materials and methods Focused question Does length of the wide-diameter implant influence its survival? Does the surface modification influence its survival compared to machined implant surfaces? Does the implant placement in the maxilla or the mandible influence its survival? Literature search and study design The database on PubMed, Web of Science, and Cochrane Central Register of Cont...

Review : A meta-analysis on the effect of implant ...

Review Introduction Endosseous implants were used reliably in the treatment of various degrees of edentulism. In restoring the edentulous ridge, the clinician could be faced with difficult bony situations. The wide-diameter implant could be used in these situations to improve primary stability by increasing the surface area available for osteointegration. Biomechanically, the wide-diameter imp...

A meta-analysis on the effect of implant character...

A meta-analysis on the effect of implant characteristics on the survival of the wide-diameter implant Abstract The purposes of the study are to study the implant survival of the wide-diameter implant and to analyze if the length, the implant surface, or the placement location has any effect on its survival. Electronic databases were searched from inception to Dec 2014. Studies included in the ...

Post molar extraction mandible

Figure 31. Mandibular molar extraction However, hard tissue formation within extraction sockets is highly variable in humans.