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Table 1 Implant characteristics—insertion region...

Patient Implant region (FDI) Implant parameters Dimensions of implant Diameter [mm]/length [mm] ...

About this article : Vitamin D deficiency in early...

Fretwurst, T., Grunert, S., Woelber, J.P. et al. Vitamin D deficiency in early implant failure: two case reports. Int J Implant Dent 2, 24 (2016). https://doi.org/10.1186/s40729-016-0056-0 Download citation Received: 04 August 2016 Accepted: 16 November 2016 Published: 25 November 2016 DOI: https://doi.org/10.1186/s40729-016-0056-0

Rights and permissions : Vitamin D deficiency in e...

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...

Author information : Vitamin D deficiency in early...

Department of Oral- and Craniomaxillofacial Surgery, Center for Dental Medicine, University Medical Center Freiburg, Hugstetter Straße 55, Freiburg, D-79106, Germany Tobias Fretwurst, Sebastian Grunert, Katja Nelson & Wiebke Semper-Hogg Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, USA Tobias Fretwurst Department of Operative Dentistr...

Acknowledgements : Vitamin D deficiency in early i...

We would like to thank Dr. John Nelson for his resourceful and constructive ideas. The authors Tobias Fretwurst, Sebastian Grunert, Johan Woelber, Katja Nelson, and Wiebke Semper-Hogg declare no conflicts of interest with respect to the research, authorship, and/or publication of this article. The authors Tobias Fretwurst, Sebastian Grunert, Johan Woelber, Katja Nelson, and Wiebke Semper-Hogg do...

References : Vitamin D deficiency in early implant...

Di Rosa M, Malaguarnera M, Nicoletti F, Malaguarnera L. Vitamin D3: a helpful immuno-modulator. Immunology. 2011;134(2):123–39. Download references

References : Vitamin D deficiency in early implant...

Kikuta J, Kawamura S, Okiji F, Shirazaki M, Sakai S, Saito H, Ishii M. Sphingosine-1-phosphate-mediated osteoclast precursor monocyte migration is a critical point of control in antibone-resorptive action of active vitamin D. Proc Natl Acad Sci U S A. 2013;110(17):7009–13. Hewison M, Freeman L, Hughes SV, Evans KN, Bland R, Eliopoulos AG, Kilby MD, Moss PA, Chakraverty R. Differential regulatio...

References : Vitamin D deficiency in early implant...

Hong HH, Chou TA, Yang JC, Chang CJ. The potential effects of cholecalciferol on bone regeneration in dogs. Clin Oral Implants Res. 2012;23(10):1187–92. Hong HH, Yen TH, Hong A, Chou TA. Association of vitamin D3 with alveolar bone regeneration in dogs. J Cell Mol Med. 2015;19(6):1208–17. Schulze-Späte U, Dietrich T, Wu C, Wang K, Hasturk H, Dibart S. Systemic vitamin D supplementation and ...

References : Vitamin D deficiency in early implant...

Gallagher JC, Sai AJ. Vitamin D insufficiency, deficiency, and bone health. J Clin Endocrinol Metab. 2010;95(6):2630–3. Ning Z, Song S, Miao L, Zhang P, Wang X, Liu J, Hu Y, Xu Y, Zhao T, Liang Y, Wang Q, Liu L, Zhang J, Hu L, Huo M, Zhou Q. High prevalence of vitamin D deficiency in urban health checkup population. Clin Nutr. 2016;35(4):859–63. Spiro A, Buttriss JL. Vitamin D: an overview o...

References : Vitamin D deficiency in early implant...

Maier GS, Horas K, Seeger JB, Roth KE, Kurth AA, Maus U. Is there an association between periprosthetic joint infection and low vitamin D levels? Int Orthop. 2014;38(7):1499–504. Alvim-Pereira F, Montes CC, Thomé G, Olandoski M, Trevilatto PC. Analysis of association of clinical aspects and vitamin D receptor gene polymorphism with dental implant loss. Clin Oral Implants Res. 2008;19(8):786–...

References : Vitamin D deficiency in early implant...

Esposito M, Thomsen P, Ericson LE, Lekholm U. Histopathologic observations on early oral implant failures. Int J Oral Maxillofac Implants. 1999;14:798–810. Olmedo-Gaya MV, Manzano-Moreno FJ, Cañaveral-Cavero E, de Dios Luna-Del Castillo J, Vallecillo-Capilla M. Risk factors associated with early implant failure: a 5-year retrospective clinical study. J Prosthet Dent. 2016;115(2):150–5. Wenn...

Conclusions : Vitamin D deficiency in early implan...

To overcome the shortcomings of this case reports, prospective, multicenter, and controlled studies must follow to affirm a potential relationship between vitamin D deficiency, osteoimmunology, and the early failure of dental implants. Currently, a general recommendation for a standardized vitamin D screening in dental implantology cannot be stated due to lack of evidence.

Case presentation : Vitamin D deficiency in early ...

Nevertheless, the vitamin D deficiency prevalence in the European population indicates that a vitamin D deficiency is probably not a sole causative factor for early implant failure; otherwise, the early implant failure rate would be significantly higher. However, a synergistic effect with other factors is conceivable. Some authors stated that implant osseointegration is not simply a wound healing ...

Case presentation : Vitamin D deficiency in early ...

Local and systemic factors can affect the survival rate of dental implants [30–33]. The causes of early implant failure are not fully clarified and an association between vitamin D and dental implant osseointegration has not been investigated properly [8, 13–16]. Some recent animal studies in rodents demonstrated a relationship between vitamin D supplementation and an increased bone to implant...

Case presentation : Vitamin D deficiency in early ...

In this 51-year-old male patient, no grafting procedure was performed as vertical and horizontal alveolar ridge dimension was adequate for implant placement. The implant placement in regions 36 and 37 was performed as guided surgery (Fig. 2a, Table 1). The implant placement was uneventful and the bone appeared clinically healthy. A cortical bone profiling was performed during implant placement. ...

Case presentation : Vitamin D deficiency in early ...

The medical history of this 48-year-old male patient showed a high blood pressure; otherwise, the patient was healthy. A successfully completed periodontal therapy was done before implant therapy. The patient demonstrated stable marginal bone levels. Autologous retromolar bone grafting using local anesthesia was performed in the left mandible (see Fig. 1a). This patient received a postoperative o...

Case presentation : Vitamin D deficiency in early ...

Patients treated consecutively in one center (Department of Oral- and Craniomaxillofacial Surgery, University Medical Center Freiburg). None of the patients showed systemic disease. Both patients did not take regular medication and were negative for alcohol, nicotine, and drug use. Bothe male patients (48 and 51 years of age) were not immunosuppressed, irradiated or received chemotherapy. Written...

Background : Vitamin D deficiency in early implant...

Long-term stable osseointegrated implants are the primary goal in dental implantology. Although dental implants have proven clinical reliable in the long term, the failure of implants at a very early stage of osseointegration has been described [1, 2]. The pursuit to identify the mechanisms leading to early implant failure is ongoing to date and include the following: tobacco usage, diabetes, wear...

Abstract : Vitamin D deficiency in early implant f...

An association between vitamin D deficiency and early dental implant failure is not properly verified, but its role in osteoimmunology is discussed. This article illustrates two case reports with vitamin D deficiency and early implant failure. Prior to implant placement, the first patient received crestal bone grafting with autologous material. Both patients received dental implants from different...

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 ±Â...

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 ±Â...

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 1Â...

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 1 Implant characteristics—insertion region...

Patient Implant region(FDI) Implant parameters Dimensions of implantDiameter [mm]/length [mm] Explantation[Days after placement] 1 3637 First placementStraumannRN SLactive®(TiZr) First placementØ: 4.1; L: 10Ø: 4.1; L: 8 3   3637 Second placementStraumannTissue level(TiZr) Second placementØ :4.1, L: 8Ø :4.1, L: 8 3   36 Third placementConelog ScrewLine(...

Figure 2. a Patient 2. Postoperative orthopantomo...

  Figure 2. a Patient 2. Postoperative orthopantomogram one day after implant placement. b Patient 2. Postoperative orthopantomogram after second Implant placement

Figure 1. a Patient 1. Post grafting orthopantomo...

  Figure 1. a Patient 1. Post grafting orthopantomogram. The bone block was secured with a single microscrew. b Patient 1. The radiograph demonstrates veritable inserted Straumann bone level implants after the first implant placement (1 day after implant placement). A peri-implant osteolysis is not visible. c Patient 1. Postoperative orthopantomogram (1 day after implant placement) afte...

References : Vitamin D deficiency in early implant...

References Esposito M, Thomsen P, Ericson LE, Lekholm U. Histopathologic observations on early oral implant failures. Int J Oral Maxillofac Implants. 1999;14:798–810. Olmedo-Gaya MV, Manzano-Moreno FJ, Cañaveral-Cavero E, de Dios Luna-Del Castillo J, Vallecillo-Capilla M. Risk factors associated with early implant failure: a 5-year retrospective clinical study. J Prosthet Dent. 2016;115...

Discussion : Vitamin D deficiency in early implant...

However, a synergistic effect with other factors is conceivable. Some authors stated that implant osseointegration is not simply a wound healing phenomenon but rather complex foreign body reaction with activation of the immune system. Titanium and metal particle release is discussed as cause for implant failure as well as implant dentistry. It is assumed that metal particles influence the ma...

Discussion : Vitamin D deficiency in early implant...

However, a present human study cannot confirm an effect due to vitamin D supplementation on bone formation or graft resorption after maxillary sinus augmentation. Satue et al. found a positive influence of 7-dehydrocholesterol (7-DHC), the precursor of vitamin D, coated implants on osteoblast differentiation in vitro. But whether vitamin D-coated dental implants have an effect of osseo...

Discussion : Vitamin D deficiency in early implant...

Discussion This article demonstrated that implant placement was successful after vitamin D supplementation in patients with vitamin D deficiency and early failed implants. None of the patients showed systemic disease or did take regular medication, alcohol, nicotine, or drugs. The patients were not immunosuppressed, irradiated, or received chemotherapy. All implants were inserted with the s...

Case presentation : Vitamin D deficiency in early ...

After vitamin D supplementation and a healing period of 6 months, a third surgical intervention was planned and one implant (Conelog ScrewLine) was inserted in region 36 (see Table 1 and Fig. 1d). During implant placement, the former explantation site appeared clinically fully re-ossified. The patient received an intraoperative intravenous single-dose antibiotic therapy with Isocillin 1.2 mega. At...

Case presentation : Vitamin D deficiency in early ...

  Patient The medical history of this 48-year-old male patient showed a high blood pressure; otherwise, the patient was healthy. A successfully completed periodontal therapy was done before implant therapy. The patient demonstrated stable marginal bone levels. Autologous retromolar bone grafting using local anesthesia was performed in the left mandible (see Fig. 1a). This patient received a pos...

Case presentation : Vitamin D deficiency in early ...

Case presentation Patients and surgical procedure Patients treated consecutively in one center (Department of Oral- and Craniomaxillofacial Surgery, University Medical Center Freiburg). None of the patients showed systemic disease. Both patients did not take regular medication and were negative for alcohol, nicotine, and drug use. Bothe male patients (48 and 51 years of age) were not immunosu...

Background : Vitamin D deficiency in early implant...

Background Long-term stable osseointegrated implants are the primary goal in dental implantology. Although dental implants have proven clinical reliable in the long term, the failure of implants at a very early stage of osseointegration has been described. The pursuit to identify the mechanisms leading to early implant failure is ongoing to date and include the following: tobacco usage, diabete...

Vitamin D deficiency in early implant failure: two...

Abstract An association between vitamin D deficiency and early dental implant failure is not properly verified, but its role in osteoimmunology is discussed. This article illustrates two case reports with vitamin D deficiency and early implant failure. Prior to implant placement, the first patient received crestal bone grafting with autologous material. Both patients received dental implants fr...