Soft and hard tissue evaluation for vestibular socket therapy of immediately placed implants in infected and non-infected sockets: a 1-year prospective cohort study.

BACKGROUND: Immediate implant placement using vestibular socket therapy (VST) proved to offer a successful treatment option in compromised sockets. However, the presence of active signs infection complicates immediate implants in sockets with defective labial plates, due to the possible contamination of the implant or the bone graft with existing infected tissues or oral environment via the fistula. This study, therefore, aims to explore the success of immediate implant placement using VST in managing infected compromised sockets. METHODS: We included 26 age- and sex-matched patients with 41 implants sites. Thirteen patients had 19 infected (group I) and 13 had 21 non-infected type 2 sockets (group N). Both groups were treated using vestibular socket therapy (VST) and a 6-day protocol. Implant survival, changes in facial bone thickness, and mid, mesial, and distal mucosal levels were evaluated 1 year after implant placement. The Mann-Whitney U test was used to compare both groups. Furthermore, the Wilcoxon signed-rank test was used to study changes with time within each group. The statistical significance level was set at P < 0.05. RESULTS: All implants survived; no significant difference was found between groups N and I regarding apical, mid, and crestal bone thickness and soft tissue level, except at the mesial papilla, where the recession was significantly more in group N than in group I. Changes over time were statistically significant in the apical, mid, and crestal bone thickness in both groups. The mean bone thickness gain ranged from 0.85 to 2.4 mm and 0.26-1.63 mm in groups I and N, respectively. Additionally, the mean mucosal recession ranged from 0.29 to 0.51 mm and 0.39-1.47 mm in groups I and N, respectively. CONCLUSION: Within the limitations of this study immediate implant placement in type II infected sockets using the 6-day protocol and VST achieved 100% implant survival, while maintaining the regenerated facial bone thickness with minimal mucosal recession. TRIAL REGISTRATION: The protocol for this study was registered on clinicaltrials.gov at 3/10/2021 (registration number NCT04787224).

EXTRA-SHORT IMPLANTS MAY BE A VIABLE ALTERNATIVE TO LONGER IMPLANTS WITH BONE AUGMENTATION IN ATROPHIC MAXILLARY AND MANDIBULAR RIDGES.

ARTICLE TITLE AND BIBLIOGRAPHIC INFORMATION: Yu X, Xu R, Zhang Z, Yang Y, Deng F. A meta-analysis indicating extra-short implants (≤ 6 mm) as an alternative to longer implants (≥ 8 mm) with bone augmentation. Scientific reports. 2021 Apr 14;11(1):1-27. SOURCE OF FUNDING: The research was supported by the Science and Technology Major Project of Guangdong Province (2017B090912004). TYPE OF STUDY/DESIGN: Systematic review.

EFFECT OF FRAMEWORK MATERIAL ON THE CLINICAL OUTCOMES OF FULL ARCH IMPLANT SUPPORTED PROSTHESES REMAINS UNQUANTIFIABLE.

ARTICLE TITLE AND BIBLIOGRAPHIC INFORMATION: Delucchi, F.; De Giovanni, E.; Pesce, P.; Bagnasco, F.; Pera, F.; Baldi, D.; Menini, M. Framework Materials for Full-Arch Implant-Supported Rehabilitations: A Systematic Review of Clinical Studies. Materials 2021, 14, 3251. https:// doi.org/10.3390/ma14123251 SOURCE OF FUNDING: This research received no funding. TYPE OF STUDY/DESIGN: Systematic Review (SR).

INTRAORAL SCANNING AND CONVENTIONAL IMPRESSION MAY HAVE SIMILAR TIME EFFICIENCY FOR COMPLETE COVERAGE CROWNS AND THREE-UNIT FIXED TOOTH-SUPPORTED PROSTHESES.

ARTICLE TITLE AND BIBLIOGRAPHIC INFORMATION: Bandiaky ON, Le Bars P, Gaudin A, Hardouin JB, Cheraud-Carpentier M, Mbodj EB, Soueidan A. Comparative assessment of complete-coverage, fixed tooth-supported prostheses fabricated from digital scans or conventional impressions: A systematic review and meta-analysis. J Prosthet Dent. 2022 Jan;127(1):71-79. doi: 10.1016/j.prosdent.2020.09.017. Epub 2020 Nov 2. PMID: 33,143,901. SOURCE OF FUNDING: Information not available TYPE OF STUDY/DESIGN: Systematic review with meta-analysis of data.

LIMITED EVIDENCE SUGGESTS SURVIVAL OF NON-SPLINTED SHORT IMPLANTS (≤8.5 MM) IS COMPARABLE TO THAT OF SPLINTED IMPLANTS.

ARTICLE TITLE AND BIBLIOGRAPHIC INFORMATION: Li QL, Yao MF, Cao RY, Zhao K, Wang XD. Survival Rates of Splinted and Nonsplinted Prostheses Supported by Short Dental Implants (≤8.5 mm): A Systematic Review and Meta-Analysis. J Prosthodont. 2022;31(1):9-21. doi:10.1111/jopr.13402. Epub 2021 Jul 16. PMID:34160869. SOURCE OF FUNDING: This work was supported by the National Natural Science Foundation of China under grants No. 82071156, No. 81470767, and No. 81271175. TYPE OF STUDY/DESIGN: Systematic review with meta-analysis of data (SRMA).

LIMITED EVIDENCE SUGGESTS NO CORRELATION BETWEEN IMPLANT INSERTION TORQUE AND IMPLANT SURVIVAL AND MARGINAL BONE LOSS.

ARTICLE TITLE AND BIBLIOGRAPHIC INFORMATION: Clinical effect of the high insertion torque on dental implants: A systematic review and meta-analysis. Lemos CA, Verri FR, de Oliveira Neto OB, Cruz RS, Gomes JML, da Silva Casado BG, Pellizzer EP. J Prosthet Dent 2021; 126(4): 490-496. SOURCE OF FUNDING: Not reported. TYPE OF STUDY/DESIGN: Systematic review with meta-analysis (SR).

THE EVIDENCE IS UNCLEAR ON THE EFFECTIVENESS OF PLATELET RICH FIBRIN IN SOCKET PRESERVATION.

ARTICLE TITLE AND BIBLIOGRAPHIC INFORMATION: Al-Maawi, S, Becker, K, Schwarz, F, Sader R, Ghanaati, S. Efficacy of platelet-rich fibrin in promoting the healing of extraction sockets: a systematic review. Int J Implant Dent 7, 117 (2021). https://doi.org/10.1186/s40729-021-00393-0 SOURCE OF FUNDING: This study was self-funded by the author TYPE OF STUDY/DESIGN: Systematic review (SR).

SMOKING MIGHT INCREASE THE FAILURE RATE AND MARGINAL BONE LOSS AROUND DENTAL IMPLANTS.

ARTICLE TITLE AND BIBLIOGRAPHIC INFORMATION: Mustapha AD, Salame Z, Chrcanovic BR. Smoking and Dental Implants: A Systematic Review and Meta-Analysis. Medicina. 2021 Dec 27;58(1):39. SOURCE OF FUNDING: No external sources of funding were available for conducting this study. TYPE OF STUDY/DESIGN: Systematic review (SR) with meta-analysis (MA) of data.

POST-SURGICAL NEUROSENSORY DYSFUNCTION OF INFERIOR ALVEOLAR NERVE IN BILATERAL SAGITTAL SPILT OSTEOTOMY OF THE MANDIBLE USING SAW VERSUS PIEZOTOME: A SYSTEMATIC REVIEW AND META-ANALYSIS.

PURPOSE: The purpose of this systematic review was to compare neuro-sensory dysfunction incidence between saw and piezotomes in patients requiring bilateral sagittal split osteotomy. METHODS: Searches were performed electronically in 4 databases (PubMed, LILACS, Cochrane Library, and grey literature) up to September 2020 and manually to identify studies addressing the subject. Randomized and non-randomized clinical trials were included. RESULTS: Six studies met the eligibility criteria with a total number of 284 participants. The risk of bias assessment for randomized clinical trials was high, and for non-randomized clinical trials was critical and serious. Regarding inferior alveolar neuro-sensory dysfunction, the meta-analysis showed no significant difference between saw and piezotome 1 week [RR = 0.99, 95% CI (0.90, 1.08) P = 0.79], and 3 months [RR = 0.39, 95% CI (0.09, 1.75) P = 0.22], post-operatively. CONCLUSIONS: For patients requiring bilateral sagittal split osteotomy, piezotomes seem to offer no advantage over conventional saws regarding the incidence of neurosensory disturbance. Follow-up periods longer than 3 months may reveal faster physiologic regain of sensations. They seem to be safer than conventional saws regarding blood loss. However, proper training for using the device is mandatory, while considering the longer operating time required. Further RCTs are still recommended to improve the level of evidence.

Evidence Is Unclear About the Best Material and Technique Required for Alveolar Ridge Preservation for Dental IMPLANT SITE Development.

ARTICLE TITLE AND BIBLIOGRAPHIC INFORMATION: Interventions for replacing missing teeth: alveolar ridge preservation techniques for dental implant site development. Atieh MA, Alsabeeha NH, Payne AG, Duncan W, Faggion CM, Esposito M. Cochrane Database Syst Rev 2015. https://doi.org/10.1002/14651858.CD010176.pub2. SOURCE OF FUNDING: This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors. TYPE OF STUDY/DESIGN: Systematic review with meta-analysis.

A technique for retrieving cement-retained implant prostheses.

Lack of retrievability is one of the most important disadvantages of cement-retained implant restorations. A straightforward and cost-effective technique for accessing the abutment screw channel and unscrewing the abutment and cement-retained prosthesis as 1 unit is described. The technique does not jeopardize the integrity of the restoration, screw, abutment, or implant. A guiding acrylic resin index is fabricated for locating and guiding the access to the screw channel of the abutment, provided that the patient's cast with the implant analog is available. The procedure could be extrapolated to computer-aided designed and computer-aided manufactured (CAD-CAM) implant prostheses, whereby a CAD-CAM index could be fabricated on the digital model.

Effect of two different soft liners and thicknesses mediating stress transfer for immediately loaded 2-implant supported mandibular overdentures: A finite element analysis study.

STATEMENT OF PROBLEM: The use of soft liners as female receptacles for ball attachments retaining immediately loaded implant overdenture has been recommended to enhance osseointegration and provide a shock absorbing effect. However, which liner and which thickness is still unclear. PURPOSE: The purpose of this finite element analysis (FEA) study was to evaluate the effect of a 2- and 4-mm thickness of thermoplastic resin (TRL) and silicone-based liners (SBL) on the displacement and stresses transmitted to immediately loaded implants retaining a mandibular overdenture. MATERIAL AND METHODS: Four 3-dimensional (3D) FEA models of a mandibular implant overdenture retained by 2 ball attachments (2 models for each lining material with 2- or 4-mm liner thicknesses) were developed. Implants were placed in the canine regions and surrounded by a 1-mm cylinder of immature bone simulating immediate loading. A vertical and an oblique load of 150 N were applied in the right premolar molar regions. Stresses and displacement were set as output variables. RESULTS: Replacing the TRL by the SBL was associated with a decrease in stresses by 73% and in displacement by at least 46%. Increasing the thickness of any liner decreases stresses by 45% during vertical loading and by 25% during oblique loading and decreases displacement by 61.5% during vertical loading and by an average of 32.5% during oblique loading. None of the liners exceeded the experimental risk limits for micromotion at the bone-implant interface (50 µm). CONCLUSION: In immediately loaded mandibular implant overdentures, both SBL and TRL decrease the micromotion of implants and the stresses at the bone-implant interface. However, SBL is more effective. The thickness of both liners seems to play a major role in decreasing the stresses and displacement of periimplant tissues.

No Clear Evidence of the Effect of Cantilevered Implant Supported Fixed Restorations on the Marginal Bone or the Prosthetic Complications.

ARTICLE TITLE AND BIBLIOGRAPHIC INFORMATION: Effect of cantilevers for implant-supported prostheses on marginal bone loss and prosthetic complications: systematic review and meta-analysis. Torrecillas-Martinez L, Monje A, Lin G, Suarez F, Ortega-Oller I, Galindo-Moreno P, Wang H. Int J Oral Maxillofac Implants 2014;29(6):1315-21. SOURCE OF FUNDING: Not reported STUDY DESIGN: Systematic review and meta-analysis.

No Clear Evidence Regarding the Effect of Osteoporosis on Dental Implant Failure.

ARTICLE TITLE AND BIBLIOGRAPHIC INFORMATION: Impact of osteoporosis in dental implants: a systematic review. Giro G, Chambrone L, Goldstein A, Rodrigues JA, Zenóbio E, Feres M, Figueiredo LC, Cassoni A, Shibli JA. World J Orthop 2015;6(2):311-5. TYPE OF STUDY/DESIGN: Systematic review.