Anterior implant restorations with a convex emergence profile increase the frequency of recession: 12‐month results of a randomized controlled clinical trial

Journal Of Clinical Periodontology, Journal Year: 2022, Volume and Issue: 49(11), P. 1145 - 1157

Published: July 12, 2022

Abstract Aim To test whether the emergence profile (CONVEX or CONCAVE) of implant‐supported crowns influences mucosal margin stability up to 12 months after insertion final restoration. Materials and Methods Forty‐seven patients with a single implant in anterior region were randomly allocated one three groups: (1) CONVEX ( n = 15), provisional an crown both convex profile; (2) CONCAVE 16), concave (3) CONTROL no (healing abutment only) crown. All recalled at baseline, 6, months. The along clinical, aesthetic, profilometric outcomes as well time costs evaluated. predict presence recession, multivariable logistic regressions performed linear models using generalized estimation equations conducted for different outcomes. Results Forty‐four available post‐loading. frequency recession amounted 64.3% group CONVEX, 14.3% CONCAVE, 31.4% CONTROL. Regression revealed that was significantly associated recessions (odds ratio: 12.6, 95% confidence interval: 1.82–88.48, p .01) compared profile. Pink aesthetic scores 5.9 6.2 5.4 CONTROL, significant differences between groups .735). Groups increased appointments group. Conclusions use provisionals results greater loading. This is accompanied, however, by absence may not necessarily enhance Trial registration: German Clinical Trials Register; DRKS00009420.

Language: Английский

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Influence of implant restorative emergence angle and contour on peri‐implant marginal bone loss: A systematic review and meta‐analysis

Clinical Implant Dentistry and Related Research, Journal Year: 2023, Volume and Issue: 25(5), P. 840 - 852

Published: May 14, 2023

Abstract Background Implant restorative emergence angle and profile may have a negative impact on peri‐implant marginal bone level increase the risk of developing peri‐implantitis. However, role these prosthetic features health is still unclear. The aim this systematic review meta‐analyses was to evaluate long‐term outcomes implant restorations with an >30° in comparison those ≤30° terms changes level, periodontal parameters, prevalence rate Methods Electronic databases were searched identify observational studies that compared ≤30°. bias assessed using Cochrane Collaboration's Risk Bias tool. Results Four 912 dental implants 397 participants included present review. Of these, 455 had >30°, while remaining follow‐up time varied between 3.8 10.9 years. associated less >30°. difference, however, not statistically significant (mean difference 0.80; 95% confidence interval (CI) −0.13 1.72; p = 0.09). In platform‐matched implants, two groups favor profile, convex significantly higher peri‐implantitis (57.8%) concave or straight (21.3%) (risk ratio 2.32; CI 1.12–4.82; 0.02). Conclusions Within limitation review, angles seem no influence level. Platform‐matched positive effects changes, but evidence support low moderate certainty.

Language: Английский

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Association of prosthetic angles of the Implant Supracrestal Complex with peri‐implant tissue mucositis

Clinical and Experimental Dental Research, Journal Year: 2023, Volume and Issue: 9(3), P. 425 - 436

Published: May 17, 2023

Abstract Objectives The aim of this study was to investigate the association Mucosal Emergence Angle (MEA) with peri‐implant tissue mucositis. Material and Methods Forty‐seven patients 103 posterior bone level implants underwent clinical radiographic examination. Three‐dimensional data from Cone Bean Computer Tomography Optica Scan were transposed. Three angles defined: MEA, Deep (DA) Total (TA) measured at six sites for each implant. Results There a significant correlation between MEA Bleeding on Probing all an overall odds ratio odd 1.07 (95% confidence interval [CI] 1.05–1.09, p < 0.001). Sites ≥ 30°, 40°, 50°, 60°, 70° had higher risk bleeding 3.1, 5, 7.5, 11.4 33.55, respectively. When 6 implant prostheses having 9.5 times CI 1.70–52.97, = 0.010). Conclusions Maintaining no wider than 30°−40° is advisable, while should be keep angle as narrow clinically feasible. Registered in Thai Clinical Trials Registry: http://www.thaiclinicaltrials.org/show/TCTR20220204002 .

Language: Английский

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Impact of keratinized mucosa on implant‐health related parameters: A 10‐year prospective re‐analysis study

Clinical Implant Dentistry and Related Research, Journal Year: 2024, Volume and Issue: 26(3), P. 554 - 563

Published: Feb. 28, 2024

Abstract Aim To investigate whether the lack of keratinized mucosa (KM) affects peri‐implant health after 10 years loading. Materials and Methods Data from 74 patients with 148 implants two randomized controlled studies comparing different implant systems were included analyzed. Clinical parameters including bleeding on probing (BOP), depth (PD), plaque index, marginal bone loss (MBL), KM width (KMW) at buccal sites collected baseline (time final prosthesis insertion), 5‐year postloading. Multivariable logistic linear regression models by means a generalized estimated equation (GEE) used to evaluate influence clinical parameters; BOP, MBL, PD, adjusted for type (one‐piece or two‐piece) compliance. Results A total 35 (24.8%) healthy, 67 (47.5%) had mucositis 39 (27.6%) affected peri‐implantitis. In absence (KM = 0 mm), 75% exhibited mucositis, while in presence (KMW >0 mm) 41.2% mucositis. Regarding peri‐implantitis, corresponding percentages 20% 26.7% mm). Unadjusted showed that tended reduce odds showing BOP (OR: 0.28 [95% CI, 0.07 1.09], p 0.06). The model revealed having 0.21 0.05 0.85], 0.02) using two‐piece 0.34 0.15 0.75], 0.008) significantly reduced BOP. Adjusted GEE associated MBL changes ( < 0.05). Conclusion appears be linked such as but association is weak. design one‐piece may account their increased exhibiting

Language: Английский

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A Randomized Controlled Trial on the Timing of Soft‐Tissue Augmentation in Immediate Implant Placement: Hard‐Tissue Changes and Clinical Outcome

Journal Of Clinical Periodontology, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 1, 2024

ABSTRACT Aim To assess the impact of timing soft‐tissue augmentation (STA) on mean buccal bone changes following immediate implant placement (IPP) in anterior maxilla. Materials and Methods Patients with a failing tooth intact wall maxilla (15–25) were enrolled this randomized controlled trial. Following single IIP socket grafting, they randomly allocated to control group (immediate STA performed during same surgical procedure) or test (delayed 3 months later). Implants placed guide immediately restored an implant‐supported provisional crown. Changes dimensions assessed using superimposed CBCT images taken prior surgery at 1‐year follow‐up. Clinical outcomes registered Results Twenty patients each (control: 16 females, 4 males, age 57.6; test: 9 11 54.2). Ten 13 had thick phenotype. Estimated marginal horizontal loss 1 mm below shoulder was −0.553 −0.898 for group, respectively. The estimated difference 0.344 favour not significant (95% CI: −0.415 1.104; p = 0.363). Also all other vertical levels, no differences could be observed between groups. combination grafting enabled counteraction any (≥ 0 mm) 82% 75% ( 1.000). clinical outcome favourable both groups, yet implants demonstrated slightly less (median 0.20 mm; 95% 0.00–0.44; 0.028). Conclusion In mainly maxilla, loss. Trial Registration ClinicalTrials.gov identifier: NCT05537545

Language: Английский

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Buccal bone thickness and mid‐facial soft tissue recession after various surgical approaches for immediate implant placement: A systematic review and network meta‐analysis of controlled trials

Journal Of Clinical Periodontology, Journal Year: 2023, Volume and Issue: 50(4), P. 533 - 546

Published: Jan. 12, 2023

Abstract Aim To evaluate the relative efficacy and confidence in precision of results different surgical interventions for immediate implant placement anterior area. Materials Methods Electronic searches were performed PubMed, Embase, Cochrane CENTRAL. Randomized controlled trials comparing techniques jaws type 1 included. Outcome measures included survival (primary outcome), buccal bone thickness (BBT) reduction, mid‐facial soft tissue recession (MSTR). Risks bias assessment, network meta‐analysis (NMA), sensitivity analysis, quality‐of‐evidence assessment performed. Results Twenty‐two studies reporting on 948 subjects 5 Fourteen early failures reported. Compared with open‐flap surgery without augmentation (F‐N) looking at BBT preservation, NMA showed that there was moderate flapless hard (FL‐HTA) better than (FL‐N) or (F‐HTA) (mean difference –0.8 mm, 95% interval: −1.1 to −0.5 mm; −0.6 −0.9 −0.4 −0.7 −0.3 respectively). There (FL‐HTA&STA) could significantly prevent MSTR compared FL‐HTA (−0.5 mm) FL‐N (−0.6 −1.2 −0.04 mm). However, no significant additional benefit FL‐HTA&STA approach (−0.30 −0.81 0.21 Conclusions For areas, preserves (moderate confidence); adding STA improves stability level confidence) but expense (low confidence).

Language: Английский

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Contour angle and peri‐implant tissue height: Two interrelated features of the implant supracrestal complex

Clinical and Experimental Dental Research, Journal Year: 2023, Volume and Issue: 9(3), P. 418 - 424

Published: March 29, 2023

Recent research has suggested the contour of prosthesis and vertical height peri-implant mucosa as important parameters that can influence long term health stability tissue. In particular, overcontouring been correlated with an increased risk for peri-implantitis, while reduced soft tissue associated marginal bone loss, recession, other complications. Although these two have investigated independent in current literature, clinical experience points toward a close interrelation between transmucosal angle. It is often found implant supracrestal complex main reason prosthesis. At same time, achieving favorable 30o or less not possible unless clinician ensured adequate The purpose this short communication to establish relation by utilizing theoretical geometry equation based on Pythagorean theorem. doing so, one use dimensions well those at mucosal margin calculate essential contour.As treatment plan "top-down," case deficient height, subcrestal placement should be considered achieve proper contour.

Language: Английский

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Survival and complication rates of two dental implant systems supporting fixed restorations: 10-year data of a randomized controlled clinical study

Clinical Oral Investigations, Journal Year: 2023, Volume and Issue: 27(12), P. 7327 - 7336

Published: Oct. 31, 2023

Abstract Objectives To compare clinical, radiographic, biological and technical long-term outcomes of two types dental implants over a period 10 years. Materials methods Ninety-eight were placed in 64 patients , randomly allocated to one manufacturers (AST STM). All loaded with fixed restorations. Outcome measures assessed at implant insertion (T i ), baseline examination L 1, 3, 5, 8 ) Data analysis included survival, bone level changes, complications clinical measures. Results Re-examination was performed 43 (23 AST 20 STM) The based on 37 (AST) 32 (STM) implants. Survival rates 100% obtained for both groups. median changes the marginal levels between T (the primary endpoint) amounted loss 0.07 mm group gain 0.37 STM (intergroup p = 0.008). Technical occurred 27.0% 15.6% STM. prevalence peri-implant mucositis 29.7% 50.1% (STM). peri-implantitis 0% 6.3% Conclusions Irrespective system used, survival after years high. Minimal observed, statistically significant but clinically negligible favor more frequently encountered AST, while had higher mucositis.

Language: Английский

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Association of crown emergence angle and profile with dental plaque and inflammation at dental implants

Clinical Oral Implants Research, Journal Year: 2023, Volume and Issue: 34(10), P. 1047 - 1057

Published: July 17, 2023

Abstract Background The shape of implant restorations is critical for function and aesthetics. It may also be important in peri‐implant tissue health preservation. This study aimed to associate the restorative contour a single crown with marginal dental plaque accumulation, inflammation probing depths. Methods Subjects screw‐retained restoration were clinically examined. presence biofilm, pocket depths dependent variables. emergence angle, profile depth mucosal tunnel measured on superimposed digital scans soft‐tissue complex, removed mounted an analogue soft tissue. Results One hundred twenty two subjects (46.7% female, 68.9% never smokers, 77% treated periodontitis 52.5% participating regular supportive care) angles at margin 15.3 ± 9.4°, 12.7 8.5°, 31.3 11.8° 19.2 9.8° mesial, distal, vestibular oral aspects crowns. largest observed aspect (74.6% cases), reaching maximum 61.7°, profiles convex 59% cases. Generalized estimating equations indicated that site‐specific platform‐level angle significantly associated detectable accumulation ( p < .01) bleeding .02). Conclusions Subtle variations are biofilm inflammation. These findings 3D planning/positioning preservation health.

Language: Английский

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Prosthetic design and choice of components for maintenance of optimal peri-implant health: a comprehensive review

BDJ, Journal Year: 2024, Volume and Issue: 236(10), P. 765 - 771

Published: May 24, 2024

Current research has identified features of the prosthetic design with potential to significantly impact long-term health peri-implant tissues, while choice components is also shown be critical in an effort reduce complications implant therapy. Overcontouring prosthesis emergence profile been associated marginal bone loss, recession and peri-implantitis, mucosal angle have a strong association tissue inflammation. Further elements interest include convexity/concavity restoration, connection different geometric configurations junctions, as well dimensions. With regards components, between original third-party-manufactured might come implications, differences material microgeometry precision fit overall performance, potentially leading complications. Scrutiny specifications manufacturing essential when are considered. The aim this narrative review was summarise current evidence restorative selection which can implications for success Furthermore, aimed at interpretating scientific into meaningful strategies recommendations implement clinical practice dentistry.

Language: Английский

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