Crestal Bone Loss around Dental Implants: Platform Switching <i>vs</i> Platform Matching—A Retrospective Study

Nayak, Rashmita; Devanna, Raghu; Dharamsi, Anand M; Shetty, Jeevan; Mokashi, Rizwan; Malhotra, Sourav

doi:10.5005/jp-journals-10024-2301

Cited by 8 publications

(3 citation statements)

References 12 publications

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“…The tendency for vertical and horizontal marginal bone losses for the PS dental implants reduced over time, which was consistent with the results of a previous study [ 24 ]. However, with extended observation time, both PS and PM dental implants exhibited matching results in the present study.…”

Section: Discussionsupporting

confidence: 92%

“…A 12-month retrospective study found that the mean vertical crestal bone level for PS dental implants was 2.16 ± 1.02 mm (range, 2.16–3.12 mm), whereas the average for PM dental implants was 1.55 ± 0.82 mm (range, 1.55–4.18 mm) of crestal bone loss. In addition, the mean horizontal crestal bone level for PS dental implants was 2.27 ± 0.91 mm, whereas the mean crestal bone level was 2.16 ± 0.77 mm for the PM dental implants [ 24 ].…”

Section: Discussionmentioning

confidence: 99%

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Peri-Implant Marginal Bone Changes around Dental Implants with Platform-Switched and Platform-Matched Abutments: A Retrospective 5-Year Radiographic Evaluation

Lin

Pan

et al. 2022

JPM

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Preserving the marginal bone level (MBL) is essential for the long-term success of dental implant therapy, and bone remodeling around dental implants is considered to vary with time. Numerous studies comparing the platform-switching (PS) and platform-matching (PM) dental implants have indicated that PS dental implants showed a lesser reduction for the MBL, and the majority of them had a relatively short period. This study aimed to evaluate vertical and horizontal bone defects by using digital periapical radiographs to examine the changes in MBL around PM and PS dental implants over 5 years after functional loading. The vertical MBL (vMBL) was measured from the implant–abutment junction to the first bone-to-implant contact. The horizontal MBL (hMBL) was measured from the implant–abutment junction to the bone crest. All data were presented as means ± standard errors. Paired and independent t-tests with Welch’s correction were used to analyze the data. A total of 61 dental implants in 38 patients after 5 years of functional loading were evaluated. Over time, PS dental implants were more likely to gain bone; by contrast, PM dental implants were more likely to lose bone during the observation time. Changes in vMBL for PS dental implants were significantly less than those for PM dental implants at 1-year (p = 0.045), 3-year (p = 0.021), and 5-year (p = 0.010) loading. Likewise, changes in hMBL for PS dental implants were significantly smaller than in those for PM dental implants at 3-year (p = 0.021) and 5-year (p = 0.006) loading; however, the changes were minimal in both approaches. PS dental implants had a significant increment in the percentage of bone integration, whereas that for PM dental implants dropped over time, with no significance. In PS dental implants that occlude with natural teeth, vertical and horizontal bone gain was observed, and it was significant at 3 years (p = 0.023). A significant horizontal bone gain was observed in the opposing natural teeth at 3-year (p = 0.002) and 5-year loading (p = 0.002). The PS concept appears to preserve more MBL around dental implants by stabilizing the vMBL and hMBL over a 5-year period. A minimal marginal bone change was detected in both concepts. The opposing natural teeth at PS dental implants showed a favorable effect on marginal bone tissues.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 99%

Peri-Implant Marginal Bone Changes around Dental Implants with Platform-Switched and Platform-Matched Abutments: A Retrospective 5-Year Radiographic Evaluation

Lin

Pan

et al. 2022

JPM

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“…[ 1 2 3 ] In spite of the high success rate, crestal bone loss has been a concern for many clinicians. [ 4 5 ] In the past, 1.5 mm bone loss in the crestal region in the early years and 0.2 mm in the next consequent years were considered normal. [ 6 7 ] However in regions with poor bone quality, losing that vital bone with reduced bone height is of major concern.…”

Section: Introductionmentioning

confidence: 99%

Biomechanical evaluation of stress distribution in subcrestal placed platform-switched short dental implants in D4 bone: In vitro finite-element model study

Sesha

Sunduram²,

Abdelmagyd

2020

J Pharm Bioall Sci

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A BSTRACT The present study was carried out to assess stress distribution in the maxillary posterior bone region (D4 bone) with the help of a short platform switched subcrestal dental implants using the FEM model. Missing teeth surfaces related to the maxillary posterior region were stimulated. The bone model had a cancellous core of (0.5 mm) which represents D4 bone. A 7.5x4.6 mm screw type implant system with 3.5 platform switch abutment was selected. ANSYS WORKBENCH was used to model all the finite element structures. Force of 100 N was tested and adapted at an angle of 0º, 15º, 30º on the tooth model. Overall results from the current study showed that a high amount of stress was seen in cortical than in relation to cancellous bone. Stress values reduced from equicrestal to subcrestal (2 mm) placement of dental implants irrespective of angulation of load from 0o to 30o in both types of bone. However higher stress values were seen when force was applied in an oblique direction (30o) in comparison to a vertical load (0o). Least amount of stress was noticed when platform switched implants were placed 0.5 mm subcrestatlly irrespective of angulations of a load. Platform switched short subcrestal implants reduced the stress in the D4 cortical bone than in contrary equicrestal implant placement. This results in the preservation of marginal bone leading to implant success.

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Computational modelling and analysis of hard tissue behavior around 0.5 mm and 0.85 mm platform switched abutment using 3D finite element analysis

Afazal,

Afreen,

Chanda

2023

Forces in Mechanics

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Crestal Bone Loss around Dental Implants: Platform Switching vs Platform Matching—A Retrospective Study

Abstract: The crestal bone around the implants can be preserved with platform-switching concept.

Cited by 8 publications

References 12 publications

Peri-Implant Marginal Bone Changes around Dental Implants with Platform-Switched and Platform-Matched Abutments: A Retrospective 5-Year Radiographic Evaluation

Peri-Implant Marginal Bone Changes around Dental Implants with Platform-Switched and Platform-Matched Abutments: A Retrospective 5-Year Radiographic Evaluation

Biomechanical evaluation of stress distribution in subcrestal placed platform-switched short dental implants in D4 bone: In vitro finite-element model study

Computational modelling and analysis of hard tissue behavior around 0.5 mm and 0.85 mm platform switched abutment using 3D finite element analysis

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