Radiographic Assessment of Accuracy of Fit for Different Conical Connection Abutments on Tapered Implants

El-Sayed, Salwa M.; Makke, Alaa; Elbanna, Кhaled

doi:10.21608/edj.2020.37695.1196

Cited by 2 publications

(3 citation statements)

References 41 publications

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“…Several studies have evaluated the fit of CAD/ CAM abutments with various connection types and materials [39][40][41][42][43][44][45] . Different methods were used to evaluate the implant-abutment fit such as replica technique 42,43 , SEM 44,45 , radiographic examination 34,46,47 , and micro CT 41 .…”

Section: Resultsmentioning

confidence: 99%

“…The non-precious alloy was initially used either in the full-cast form, where the abutment including the connection is casted, or casted on a pre-machined connection. However, the success of these types, especially the full-cast type, depends to a large extent on the technician's skill and expertise 33,34 . CAD/CAM milled Co-Cr has the advantages of minimizing human errors, time and cost in addition to a smooth-surface precise finish 35 .…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of Internal Fit of CAD/CAM Implant Abutments with Hybrid and Internal Hex Connections Using Different Materials

Elbanna

Alqutub

Salem

2022

Egyptian Dental Journal

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Objective:The aim of this study was to evaluate the internal fit of hybrid and internal hex connections using different materials.Materials & Methods: Forty abutments were divided into 2 groups according to connection type. Each group was subdivided into 4 subgroups according to material (Zr, Ti, Co-Cr and softmilled Co-Cr-Mo). Internal fit was measured using replica technique.Results: All the samples had clinically acceptable gap values ≤150 µm where internal hex connection had narrower gap than conical connection. Zirconia was the material with lowest gap values, followed by titanium and soft-milled Co-Cr-Mo. Co-Cr had the largest gap distance.Conclusions: 1: Internal hex connection has better internal fit than hybrid connection with more consistent results among different materials. 2: Zirconia showed the best overall internal adaptation with consistent performance among the two connections used. 3: Low marginal gap distance of CAD/CAM conical abutments may not necessarily indicate proper seating of the abutments.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Evaluation of Internal Fit of CAD/CAM Implant Abutments with Hybrid and Internal Hex Connections Using Different Materials

Elbanna

Alqutub

Salem

2022

Egyptian Dental Journal

Self Cite

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“…Two types of abutments are available nowadays, namely custom-made and individually casted. Custom-made abutments showed the best marginal fit in contrast to casted ones due to production (dimension) repeatability [ 46 ]. Moreover, the long-term microleakage of Cast On (Straumann, Basel, Switzerland) and Castable (Rhein 83, Bologna, Italy) abutments was comparable, although significantly higher than that of custom-made (pre-machined) ones [ 5 ].…”

Section: Discussionmentioning

confidence: 99%

Micro-CT Evaluation of Microgaps at Implant-Abutment Connection

et al. 2023

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The assessment of microgaps at the implant–abutment interface is an important factor that may influence clinical success. Thus, the aim of this study was to evaluate the size of microgaps between prefabricated and customised abutments (Astra Tech, Dentsply, York, PA, USA; Apollo Implants Components, Pabianice, Poland) mounted on a standard implant. The measurement of the microgap was performed using micro-computed tomography (MCT). Due to 15-degree rotation of samples, 24 microsections were obtained. Scans were performed at four levels established at the interface between the abutment and the implant neck. Moreover, the volume of the microgap was evaluated. The size of the microgap at all measured levels varied from 0.1 to 3.7 µm for Astra and from 0.1 to 4.9 µm for Apollo (p > 0.05). Moreover, 90% of the Astra specimens and 70% of the Apollo specimens did not exhibit any microgaps. The highest mean values of microgap size for both groups were detected at the lowest portion of the abutment (p > 0.05). Additionally, the average microgap volume was greater for Apollo than for Astra (p > 0.05). It can be concluded that most samples did not exhibit any microgaps. Furthermore, the linear and volumetric dimensions of microgaps observed at the interface between Apollo or Astra abutments and Astra implants were comparable. Additionally, all tested components presented microgaps (if any) that were clinically acceptable. However, the microgap size of the Apollo abutment was higher and more variable than that of the Astra one.

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Radiographic Assessment of Accuracy of Fit for Different Conical Connection Abutments on Tapered Implants

Cited by 2 publications

References 41 publications

Evaluation of Internal Fit of CAD/CAM Implant Abutments with Hybrid and Internal Hex Connections Using Different Materials

Evaluation of Internal Fit of CAD/CAM Implant Abutments with Hybrid and Internal Hex Connections Using Different Materials

Micro-CT Evaluation of Microgaps at Implant-Abutment Connection

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