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
Fig. 3. Participant flow diagram
Fig. 2. Restorative flow diagram
Fig. 2. Restorative flow diagram
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
Indicator
Prosthetic comforta
Appearanceb
Ability to chewc
Ability to tasted
Fittinge
General satisfactionf
Treatment arm
...
Treatment arm
Summary statistics
Baseline
6 months
Change from baseline to 6 months
...
Characteristics
Early loading arm
Conventional loading arm
Total
(N = 38)
(N =...
Loading criteria 1
Loading criteria 2
• Sufficient oral hygiene
• At least 1 mm bone volume around the implanta
• No major dehiscence (
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)
...
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...
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...
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)...
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 ...
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.
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 ...
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. ...
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 ...
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...
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...
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...
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–...
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.
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...
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...
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...
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 ...
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...
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...
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...
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...
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...
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...
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...
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 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 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 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...
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)
...
Follow-up
Mean bone level (mm) (n = 124)
Time
0–6 months (95% CI) (n = 121)
0–12 months (95% CI) (n = 121)
...
Length (mm)
8
18 (14.5%)
10
56 (45.2%)
11.5
...
Number of patients
42
Males (%)
18 (42.9%)
Females (%)
24 (57.1%)
...
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
...
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...
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.
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 ...
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...
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...
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...
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...
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
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...
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...
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...
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 ...
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...
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 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 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 ...
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
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%)
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 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
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...
Klein et al., in a recent systematic review, reported that the survival rate of implants with a diameter of
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
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 ...
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...
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
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
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 (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...
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
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
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...
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
...
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
...
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...
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 1. Study selection for wide-diameter implant articles
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 ...
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...
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
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...
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
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
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 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 ...
Figure 31. Mandibular molar extraction
However, hard tissue formation within extraction sockets is highly variable in humans.