CAD/CAM Abutments versus Stock Abutments: An Update Review

Gallo, Simone; Pascadopoli, Maurizio; Pellegrini, Matteo; Pulicari, Federica; Manfredini, Mattia; Zampetti, Paolo; Spadari, F.; Maiorana, Carlo; Scribante, Andrea

doi:10.3390/prosthesis4030038

Cited by 8 publications

(9 citation statements)

References 47 publications

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“…The prosthetic abutment has seen a design evolution, starting from the individualization of stock abutments offered by manufacturers, until today, where they are customized with the CAD-CAM technology [ 5 , 6 ]. Before the introduction and implementation of CAD-CAM technology, there were only two types of prosthetic abutments distributed by manufacturers: stock abutments and fully calcinable or partially calcinable abutments with prefabricated interface, also known as UCLA abutments [ 7 ].…”

Section: Introductionmentioning

confidence: 99%

Comparative Study of Dental Custom CAD-CAM Implant Abutments and Dental Implant Stock Abutments

Ţârtea

Ionescu

Manolea

et al. 2023

JCM

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The implementation of CAD-CAM systems in dentistry has significantly influenced the evolution of dental implantology and implant-supported prosthetics within the past three decades. Implant-supported prostheses are comfortable and aesthetic. The prosthetic abutment has also faced a rapid design evolution, from the individualization of standard stock abutments offered by various manufacturers to a modern customization process using CAD-CAM technology. This paper presents a comparative study between 20 dental custom CAD-CAM implant abutments and 20 dental implant stock abutments, based on a set of measurements performed on the digital casts obtained from 24 cases of prosthetic rehabilitation on implants. The statistical analysis (Mann–Whitney U test) revealed significant differences between these two types of abutments: the incisal margin line diameter dimensions for custom abutments were significantly improved compared to standard abutments at the cervical level (U = 343.00, z = 3.868, p < 0.0005) and the incisal/occlusal level (U = 352.00, z = 4.112, p < 0.0005), while the inclination angle of the custom abutments relative to the 0-axis was significantly smaller than that of standard abutments (U = 115.50, z = −2.286, p = 0.022). The use of custom abutments leads to an increase in the final size of the abutment, an improvement in the retention of the prosthetic work, and reduces the angulation of the abutment in relation to the implant axis, thus decreasing the risk of unscrewing or fracturing the dental screw.

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Section: Introductionmentioning

confidence: 99%

Comparative Study of Dental Custom CAD-CAM Implant Abutments and Dental Implant Stock Abutments

Ţârtea

Ionescu

Manolea

et al. 2023

JCM

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“…In Implant-prosthetic rehabilitations, CAD/CAM is used in the fabrication of custom abutments. ese abutments are fabricated from titanium and/or zirconia which, as with metal-ceramic crowns, have numerous properties that can additionally enhance the esthetic outcome of anterior restorations [32].…”

Section: Discussionmentioning

confidence: 99%

“Effect of Palatal Metal Collar’s Height on Fracture Resistance of Single Metal-Ceramic Crowns”

Aburaisi

Elbishari

2022

International Journal of Dentistry

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Objectives. The purpose of this study is to evaluate the effect of the palatal metal collar height on the fracture resistance of metal-ceramic crowns. Materials and Methods. A maxillary premolar typodont tooth was prepared and scanned to fabricate 48 metal analogs. The analogs were then scanned to fabricate metal copings divided into 4 groups according to palatal metal collar height as follows; (C0): 0 mm, (C1): 1.0 mm, (C2): 1.5 mm, and (C3): 2.0 mm. After a standard application of pressed ceramic, each crown was cemented onto its corresponding metal tooth analog. The crown-analog assembly was subjected to a sequence of thermal stressing for 5,000 cycles. A universal testing machine applied controlled loads to the crowns until fracture. Examination under a stereomicroscope determined the failure mode. A scanning electron microscope (SEM) was used to examine fracture. Load to failure data was analyzed using ANOVA followed by Tukey HSD ( P ≤ 0.05 ). Results. ANOVA statistics revealed that groups with a palatal metal collar presented significantly higher failure loads when compared to the collarless group ( P < 0.0001 ). Difference in failure loads between 1.5-mm and 2.0-mm palatal metal collar height were not statistically significant ( P = 0.935 ). There were no significant differences detected among the groups in terms of failure mode. Conclusions. The height of the palatal metal collar has an effect on the fracture resistance of the metal-ceramic crowns. Clinical Relevance. The incorporation of a palatal collar with a predetermined height is essential to reduce the mechanical failure of metal-ceramic crowns.

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“…Full-digital meshes represent one component of a digitization process that includes other stages that complete a surgical case, such as case design, CAD/CAM abutments and crowns, and other 3D-printed components [75][76][77][78].…”

Section: New Materialsmentioning

confidence: 99%

Full-Digital Customized Meshes in Guided Bone Regeneration Procedures: A Scoping Review

Scribante,

Ghizzoni,

Pellegrini

et al. 2023

Prosthesis

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Meshes, especially titanium ones, are being widely applied in oral surgery. In guided bone regeneration (GBR) procedures, their use is often paired with membranes, being resorbable or non-resorbable. However, they present some limitations, such as difficulty in the treatment of severe bone defects, alongside frequent mesh exposure. Customized meshes, produced by a full-digital process, have been recently introduced in GBR procedures. Therefore, the focus of the present review is to describe the main findings in recent years of clinical trials regarding patient-specific mesh produced by CAD/CAM and 3D printing workflow, made in titanium or even PEEK, applied to GBR surgeries. The purpose is to analyze their clinical management, advantages, and complications. This scoping review considered randomized clinical trials, observational studies, cohort studies, and case series/case reports studies. Studies that did not meet inclusion criteria were excluded. The preferred reporting items for scoping reviews (PRISMA-ScR) consensus was followed. A total of 15 studies were selected for this review. Based on the studies included, the literature suggests that meshes produced by a digital process are used to restore complex and severe bone defects. Moreover, they give satisfactory aesthetic results and fit the defects, counteracting grid exposure. However, more clinical trials should be conducted to evaluate long-term results, the rate of complications, and new materials for mesh manufacturing.

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CAD/CAM Abutments versus Stock Abutments: An Update Review

Cited by 8 publications

References 47 publications

Comparative Study of Dental Custom CAD-CAM Implant Abutments and Dental Implant Stock Abutments

Comparative Study of Dental Custom CAD-CAM Implant Abutments and Dental Implant Stock Abutments

“Effect of Palatal Metal Collar’s Height on Fracture Resistance of Single Metal-Ceramic Crowns”

Full-Digital Customized Meshes in Guided Bone Regeneration Procedures: A Scoping Review

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