Implant-Abutment Connection Designs for Anterior Crowns

Machado, Sandro Lemos; Bonfante, Estevam A.; Anchieta, Rodolfo Bruniera; Coelho, Paulo G.

doi:10.1097/id.0b013e31829f1f2d

Cited by 28 publications

(42 citation statements)

References 30 publications

(28 reference statements)

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“…The most frequent causes are surgical trauma, microgaps, peri-implantitis and immediate loading (21)(22)(23). The results of this study are probably related to the presence of microgaps between the External Hexagon implant and abutment, in contrast to the intimate matching observed between the Morse Taper components (9,10). This accurate fit provides better sealing against bacterial microleakage and stability between implant and abutment, which may preserve the peri-implant tissues (9,13).…”

Section: Discussioncontrasting

confidence: 51%

“…The platform design is another relevant feature for biomechanical and esthetic success of this restoration (9). In external joints, microgaps between the implant and abutment are found, in contrast to the implants with tapered internal joint; such as Morse Taper, which exhibits intimate matching between the components (9,10). This accurate fit provides better sealing against bacterial microleakage between the implant and abutment, preserving the peri-implant tissues (9).…”

Section: Introductionmentioning

confidence: 99%

“…The marginal bone level around the implants is an important criterion to be evaluated about peri-implant success (8). The platform design is another relevant feature for biomechanical and esthetic success of this restoration (9). In external joints, microgaps between the implant and abutment are found, in contrast to the implants with tapered internal joint; such as Morse Taper, which exhibits intimate matching between the components (9,10).…”

Section: Introductionmentioning

confidence: 99%

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Peri-Implant Bone Loss of External Hexagon and Morse Taper in Patients Wearing Immediately Loaded Overdentures

et al. 2017

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The aim of this study was to evaluate the peri-implant bone loss of External Hexagon (EH) and Morse Taper (MT) implants in patients wearing immediately loaded mandibular overdentures during a 1-year follow-up. This is a non-randomized controlled clinical trial including 18 MT and 22 EH implants. Periapical radiographs were taken after overdentures insertion and following 1 year. The peri-implant bone loss was assessed through digitalization and analysis of the radiographs in the software Corel DRAW X7. For this, measurement from implant platform to residual ridge at mesial and distal surfaces of each implant was conducted. The results showed high success rate in the groups EH (100%) and MT (94.4%). For peri-implant bone levels, it was found significant difference between the groups (p=0.032) and greater bone loss was observed in the group EH. In general, bone loss was 0.85mm (±0.82) for EH and 0.10mm (±1.0) for MT. It was concluded that greater bone loss occurred in the group EH in comparison to the group MT after a 1-year follow-up. P e r i -I m p l a n t B o n e L o s s o f E x t e r n a l H e x a g o n a n d M o r s e T a p e r i n P a t i e n t s W e a r i n g Immediately Loaded Overdentures

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Section: Discussioncontrasting

confidence: 51%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Peri-Implant Bone Loss of External Hexagon and Morse Taper in Patients Wearing Immediately Loaded Overdentures

et al. 2017

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“…Historically, the external hexagon connection was designed to provide a rotational torque transferring mechanism for implant placement [4,5]. Reversibility and an anti-rotational mechanism are some advantages of this connection.…”

Section: Introductionmentioning

confidence: 99%

“…However, the external hexagon allows the existence of a microgap in the implant-abutment interface. Besides, this system is less favorable for stress distribution and has lower stability when compared to internal connection, which increases the stress over the abutment screw and micromovements during loading [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Is the internal connection more efficient than external connection in mechanical, biological, and esthetical point of views? A systematic review

Goiato

Pellizzer

Silva

et al. 2015

Oral Maxillofac Surg

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The external and internal connections have different mechanical, biological, and esthetical characteristics. Besides all systems that show proper success rates and effectiveness, crestal bone level maintenance is more important around internal connections than external connections. The Morse taper connection seems to be more efficient concerning biological aspects, allowing lower bacterial leakage and bone loss in single implants, including aesthetic regions. Additionally, this connection type can be successfully indicated for fixed partial prostheses and overdenture planning, since it exhibits high mechanical stability.

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Resin composite repair for implant‐supported crowns

et al. 2016

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This study evaluated the reliability of implant-supported crowns repaired with resin composites. Fifty-four titanium abutments were divided in three groups (n = 18 each) to support resin nanoceramic molar crowns, as follows: (LU) (Lava Ultimate, 3M ESPE); LU repaired with either a direct or an indirect resin composite. Samples were subjected to mouth-motion accelerated-life testing in water (n = 18). Cumulative damage with a use stress of 300 N was used to plot Weibull curves for group comparison. Reliability was calculated for a mission of 100,000 cycles at 400 N load. Beta values were 0.83 for LU, 0.31 and 0.27 for LU repaired with Filtek and Ceramage, respectively. Weibull modulus for LU was 9.5 and η = 1047 N, m = 6.85, and η = 1002 N for LU repaired with Ceramage, and m = 4.65 and η = 766 N for LU repaired with Filtek (p < 0.10 between LU and LU repaired with Filtek). Reliability at 400 N was 100% for both LU and LU repaired with Ceramage which were significantly higher than LU Filtek repair (32%). LU restored crowns failed cohesively. Fractures were confined within the restored material, and detailed fractography is presented. The performance of resin nanoceramic material repaired with an indirect composite was maintained after accelerated-life testing compared to unrepaired controls. © 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 105B: 1481-1489, 2017.

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Implant-Abutment Connection Designs for Anterior Crowns

Abstract: Reliability was higher for the EH and MT relative to IH groups, whereas the characteristic strength was significantly higher for implants with MT connection.

Cited by 28 publications

References 30 publications

Peri-Implant Bone Loss of External Hexagon and Morse Taper in Patients Wearing Immediately Loaded Overdentures

Peri-Implant Bone Loss of External Hexagon and Morse Taper in Patients Wearing Immediately Loaded Overdentures

Is the internal connection more efficient than external connection in mechanical, biological, and esthetical point of views? A systematic review

Resin composite repair for implant‐supported crowns

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