Platform-Switching Concept in Dental Implants: A Systematic Review and Meta-analysis of Randomized Controlled Trials with a Minimum Follow-up of 3 Years

Mishra, Sunil Kumar; Gaddale, Reetika; Sonnahalli, Nithin Kumar; Chowdhary, Ramesh

doi:10.11607/jomi.8911

Cited by 11 publications

(8 citation statements)

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“…The effect of the implant diameter on the MBL observed in the present study (Table 7) should be taken with caution since the implant size distribution of this clinical trial with consecutive patients sampling showed a very asymmetric distribution (Table 1), being most implants of regular size (73.2%). Future studies should check the clinical relevance of this finding, which ultimately could be related to the size of the gap resulting from the platform switching approach used to restore all the implants 39 …”

Section: Discussionmentioning

confidence: 96%

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How do the dimensions of peri‐implant mucosa affect marginal bone loss in equicrestal and subcrestal position of implants? A 1‐year clinical trial

Quispe‐López,

Gómez‐Polo,

Zubizarreta‐Macho

et al. 2024

Clin Implant Dent Rel Res

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IntroductionThere is evidence that the apico‐coronal implant position and the mucosal phenotype can affect the extent of peri‐implant bone loss. This clinical trial analyzes the bone remodeling and marginal bone loss that occur around conical‐connection implants placed equicrestally and subcrestally, assessing the effect of the peri‐implant soft‐tissue phenotype.MethodsFifty‐one patients received 56 implants of distinct diameters (3.5 mm Ø n = 6; 4.3 mm Ø n = 41; 5 mm Ø n = 9) in the posterior part of the maxilla or mandible. The implants were placed equicrestally, 1 mm subcrestally and >1 mm subcrestally, depending on the initial supracrestal tissue height (STH). After 3 months of non‐submerged healing, single metal‐ceramic screw‐retained implant‐supported crowns were placed. Longitudinal measurements of STH, mucosal thickness and keratinized mucosa width (KMW) were made at the time of implant placement (T0), crown placement (T1), and after 3 (T2) and 6 months (T3) of prosthetic loading. At each of these points, a radiographic evaluation of bone remodeling and marginal bone loss was also performed.ResultsSTH was significantly greater for implants placed >1 mm subcrestally than for those placed 1 mm subcrestally. After 12 months of follow‐up, a very significant (p < 0.001) loss of KMW was observed, in addition to a marginal bone loss of 0.08 ± 0.1, 0.15 ± 0.2, and 0.14 ± 0.2 mm in the groups placed equicrestally, 1 mm subcrestally and >1 mm subcrestally, respectively. After the multiple linear regression, marginal bone loss was found to depend primarily on KMW (β = −0.43), while also being affected by STH (β = 0.32) and implant diameter (β = −0.28).ConclusionsMarginal bone loss may be influenced by the position with respect to the bone crest, as well as the KMW, STH, and implant diameter. However, more well‐controlled studies are needed to verify these above‐mentioned findings with different implant designs and connections.

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Section: Discussionmentioning

confidence: 96%

“…Future studies should check the clinical relevance of this finding, which ultimately could be related to the size of the gap resulting from the platform switching approach used to restore all the implants. 39…”

Section: Discussionmentioning

confidence: 99%

How do the dimensions of peri‐implant mucosa affect marginal bone loss in equicrestal and subcrestal position of implants? A 1‐year clinical trial

Quispe‐López,

Gómez‐Polo,

Zubizarreta‐Macho

et al. 2024

Clin Implant Dent Rel Res

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“…Additionally, the prostheses supported by implants having internal connections appear to produce lower mechanical complication rates such as screw loosening or fracture when compared with prostheses supported by implants having external connection 96–98 . While studies in the literature have reported lower marginal bone loss around implants with internal connection designs after a minimum period of 12 months of follow‐up, the implant‐abutment interface seems to not influence the implant survival and complication rates 96,99,100 Implant versus abutment level: In most complete‐arch implant‐supported prostheses, engaging implant connection directly with prosthesis framework could be challenging due to the divergence of implants.…”

Section: Prevention Of Peri‐implant Diseasesmentioning

confidence: 99%

“…[96][97][98] While studies in the literature have reported lower marginal bone loss around implants with internal connection designs after a minimum period of 12 months of follow-up, the implant-abutment interface seems to not influence the implant survival and complication rates. 96,99,100 • Implant versus abutment level: In most complete-arch implantsupported prostheses, engaging implant connection directly with prosthesis framework could be challenging due to the divergence of implants. Therefore, intermediate implant abutments can be used to facilitate complete-arch implant-supported prostheses fabrication.…”

Section: Complete-arch Implant-supported Prosthesis Designmentioning

confidence: 99%

Prevention of peri‐implant disease in edentulous patients with fixed implant rehabilitations

Revilla‐León

Yılmaz

Kois

et al. 2023

Clin Implant Dent Rel Res

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Objectives To provide an overview about the current approaches to prevent peri‐implant diseases in edentulous patients with complete‐arch implant‐supported prostheses, and to review the clinical applications of the latest digital technologies for implant prosthodontics. Methods A review of the guidelines to prevent peri‐implant diseases in patient's receiving complete‐arch implant‐supported prostheses including facially driven treatment planning procedures using either conventional or digital methods, computer‐aided implant planning procedures, and prosthodontic design variables including the optimal number and distribution of dental implants, implant to abutment connection type, implant or abutment level design, screw‐ or cement‐retained alternatives, prostheses contours, and material selection is provided. Furthermore, an outline of the current therapeutic management approaches to address peri‐implant diseases is reviewed. Conclusions Clinicians should understand and know different planning and design‐related variables that can affect biological and mechanical complication rates of complete‐arch implant‐supported prostheses. Maintenance protocols are fundamental for minimizing biological and mechanical complications.

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“…A recent systematic review analyzed the MBL of 426 platform-switched and 411 platform-matched implant prostheses and concluded that platform switching resulted in a significantly smaller MBL. In that review, the greater the mismatch between the implant and abutment diameter, the lower the MBL [ 15 ]. With the introduction of rough surfaces and the platform-switching concept, the amount of MBL was significantly reduced as compared with that of the earlier implants [ 6 ].…”

Section: Introductionmentioning

confidence: 99%

Up to a 15-Year Survival Rate and Marginal Bone Resorption of 1780 Implants with or without Microthreads: A Multi Center Retrospective Study

Pyo

Chang

et al. 2023

JCM

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The effect of microthreads at the implant neck on the amount of marginal bone resorption is controversial. This multicenter retrospective study compared the implant survival rate and amount of marginal bone resorption between two platform-switching internal connection implant systems with or without microthreads. Patient-related (age and sex), surgery-related (implant installation site, type, diameter, and length), and prosthesis-related (prosthesis type) data were collected from patient charts from the implant placement surgery to the final recall visit. A total of 1780 implants, including 1379 with microthreads and 401 without microthreads, were placed in 804 patients. For implants with and without microthreads, the longest follow-up period after prosthesis delivery was 15 and 6 years, respectively. Twenty implants failed during the 15-year follow-up period (98.8% survival rate) due to failed osseointegration, peri-implantitis, implant fractures, and non-functioning implants. The mean marginal bone loss was < 0.1 mm for both implant systems at the 1-year follow-up and 0.18 mm and 0.09 mm at the 4-year follow-up for implants with and without microthreads, respectively, without statistical significance. Microthreads did not significantly affect the amount of marginal bone loss or the implant survival rate for implants with an internal connection with a platform-switching design.

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Platform-Switching Concept in Dental Implants: A Systematic Review and Meta-analysis of Randomized Controlled Trials with a Minimum Follow-up of 3 Years

Cited by 11 publications

References 0 publications

How do the dimensions of peri‐implant mucosa affect marginal bone loss in equicrestal and subcrestal position of implants? A 1‐year clinical trial

How do the dimensions of peri‐implant mucosa affect marginal bone loss in equicrestal and subcrestal position of implants? A 1‐year clinical trial

Prevention of peri‐implant disease in edentulous patients with fixed implant rehabilitations

Up to a 15-Year Survival Rate and Marginal Bone Resorption of 1780 Implants with or without Microthreads: A Multi Center Retrospective Study

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