Evaluation of the passive fit and definitive marginal fit of prefabricated and conventional CAD-CAM milled titanium bars with a fully guided surgical protocol: An in vitro study

kheneifar, Kareem Mohamed; Attar, Mohamed Sherine El; Soliman, Ingy Saied Ahmed Hassan

doi:10.1016/j.prosdent.2023.03.022

Cited by 2 publications

(1 citation statement)

References 26 publications

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“…Placing two implants in a relatively confined space may pose challenges in terms of abutment assembly and impression. However, integrating the benefits of digitalization and personalized prostheses has the potential to introduce specific improvements to address these challenges [47].…”

Section: Discussionmentioning

confidence: 99%

Single missing molar with wide mesiodistal length restored using a single or double implant-supported crown: A self-controlled case report and 3D finite element analysis

Wong,

Zhang,

Dang

et al. 2024

J Prosthodont Res

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Oral implant restoration has been widely used to treat patients with tooth loss because of its good masticatory and aesthetic functions [1,2].Loss of a single molar is one of the most common dentition defects and is often restored using a single implant [3,4]. However, when the mesiodistal length (MDL) is high (>12 mm), a single implant-supported crown faces a markedly increased risk of occlusal overload and excessive stress surrounding the implant due to the increased cantilever of the crown [5]. Moreover, the buccolingual width of the alveolar bone is typically insufficient for wide-diameter implants [6,7]. Therefore, some researchers have proposed singlecrown restoration with two narrow-diameter implants placed in the wide MDL [8][9][10][11]. Compared with single implant-supported crowns,

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Section: Discussionmentioning

confidence: 99%

Single missing molar with wide mesiodistal length restored using a single or double implant-supported crown: A self-controlled case report and 3D finite element analysis

Wong,

Zhang,

Dang

et al. 2024

J Prosthodont Res

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An in vitro comparison of the marginal fit of provisional crowns using the virtual tooth preparation workflow against the traditional technique

Shenoy,

Maiti,

Nallaswamy

et al. 2023

The Journal of Indian Prosthodontic Society

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Aim: This study investigates the effectiveness of an innovative virtual tooth preparation workflow for the fabrication of dental crowns using cone-beam computed tomography (CBCT) and intraoral scanners (IOSs) with conventional workflow using extraoral/laboratory scanners. Settings and Design: This in vitro experimental study was conducted in the laboratory of a university in Chennai, India. The dental laboratory and research facilities at the institution were utilized for the fabrication of the temporary crowns and the data acquisition process. Materials and Methods: Institutional approval was obtained from the university. It was basically a comparison between the virtual prep technique using CBCT and IOS and the conventional digital technique using extra oral scanners (EOS) for temporary crown fabrication. The sample size was estimated using an effect size of 1.5004, assuming a normal distribution, a significance level of 0.05, and a power of 0.95 in G power software. Based on this calculation, an extracted second lower molar was used to fabricate 10 samples in each group. The samples were divided into three groups: the CBCT (Group 1), the IOS (Group 2), and laboratory scanner (Group 3 as control) groups. The vertical marginal gap of all the surfaces of the crown was evaluated using a scanning electron microscope. Statistical Analysis Used: Data were analyzed using one-way ANOVA using the SPSS software version 26.0, IBM, Armonk, NY, USA. Results: Acceptable marginal discrepancy values were obtained in all three groups. There was no significant difference in the marginal discrepancy recorded (P = 0.113). Conclusion: Virtual tooth preparation using CBCT and IOSs can be used as an alternative to the conventional workflow for provisional crown and bridge fabrication.

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Evaluation of the passive fit and definitive marginal fit of prefabricated and conventional CAD-CAM milled titanium bars with a fully guided surgical protocol: An in vitro study

Cited by 2 publications

References 26 publications

Single missing molar with wide mesiodistal length restored using a single or double implant-supported crown: A self-controlled case report and 3D finite element analysis

Single missing molar with wide mesiodistal length restored using a single or double implant-supported crown: A self-controlled case report and 3D finite element analysis

An in vitro comparison of the marginal fit of provisional crowns using the virtual tooth preparation workflow against the traditional technique

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