Clinical evaluation of marginal fit of uncemented CAD-CAM monolithic zirconia three-unit restorations in anterior areas, using scannable and conventional polyvinyl siloxane impression materials

Kalantari, Mohammad Hassan; Abbasi, B. Jamal; Giti, Rashin; Rastegar, Zahra; Tavanafar, Saeid; Shahsavari-pour, Sheila

doi:10.1186/s12903-023-02771-z

Cited by 5 publications

(2 citation statements)

References 37 publications

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“…Many studies have investigated several commercially available intraoral scanners and the marginal fit of prostheses fabricated with CAD/CAM systems (5)(6)(7)(8)(9)(10)(11)(12). However, few studies have examined the Three-Dimensional fit of crowns made with CAD/CAM systems to assess different scanner types.…”

Section: Issn:2753-9172mentioning

confidence: 99%

Evaluation of Diverse Digital Impression Systems on the Three-Dimensional (3D) Fit of All-Ceram CAD/CAM Crowns

Makhlouf¹,

Hanna²,

Makhlouf³

et al. 2023

SVOADE

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Aim: This in vitro study's objective is to assess the Three-Dimensional (3D) internal and marginal fit of all-ceramic CAD/CAD crowns produced by various digital impression systems. Materials and Methods: Three different intraoral scanners: CEREC Primescan (Dentsply Sirona), Trios 4 (3Shape), and CS 3700 (Carestream Dental) were used to digitally scan an experimental model based on ISO 12836:2015. The CAD/CAM processes suggested by each system (CEREC Primescan, Trios 4 and CS 3700; N = 15) were used to create ceramic crowns. A 3D inspection program (Geomagic control X) was used to measure The Three-Dimensional (3D) marginal and internal fit of each ceramic crown. By using the Kruskal-Wallis test, differences between the systems and various measurements were assessed. Pairwise comparisons were used to validate statistically significant differences (= 0.05). Results: Occlusal gaps in the CEREC Primescan, Trios 4 and CS 3700 groups were 113.0, 161.3, and 438.2 µm, respectively (p<0.001). The axial gaps were 83.4, 78.0, and 107.9 µm, respectively. While the marginal gaps were 77.8, 99.3, and 60.6 µm, respectively, finally the whole gaps were 85.9, 107.3, and 214.0 µm, respectively. The marginal gap sizes with the Trios 4 system were considerably different from those with the other two systems. The CEREC Primescan system proved no distinctive variations between the four measured regions. However, the Trios 4 and CS 3700 systems did show a statistically significant difference (p<0.05). Conclusion: The marginal gap, which is the most essential aspect in the marginal and internal fit of fixed prostheses, was recorded to be below 100 µm in all three systems, leading to the conclusion that all three systems are capable of producing clinically acceptable prostheses.

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Section: Issn:2753-9172mentioning

confidence: 99%

Evaluation of Diverse Digital Impression Systems on the Three-Dimensional (3D) Fit of All-Ceram CAD/CAM Crowns

Makhlouf¹,

Hanna²,

Makhlouf³

et al. 2023

SVOADE

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“…It can be taken conventionally or digitally. (2,3,4,5) The elastomeric impression materials are the most commonly used in fixed prosthodontics. Digital technologies are taking up an increasing part of the planning and fabrication of fixed structures, both on natural teeth and on implants.…”

Section: Introductionmentioning

confidence: 99%

Implant impression technique preferences – survey study among dental practitioners

Kirova

2023

MedInform

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Introduction: Accurate impression techniques relative to adjacent implants or relative to natural teeth is of paramount importance for the precision fit of the restorations. The elastomeric impression materials are the most commonly used in fixed prosthodontics. Digital technologies are taking up an increasing part of the planning and fabrication of fixed restorations, both on natural teeth and on implants. Aim:The purpose of the present study was to investigate the dental practitioners' preferences for impression taking techniques in the fabrication of implant superstructures. Materials and methods:A survey was conducted among dentists regarding the preferences of impression taking on implants in the city of Varna. The survey was available on the website of BDA (Bulgarian Dental Association) Varna. The survey was conducted in a digital environment using Google Forms. For the period from April to May 2023. 61 dentists were surveyed. The obtained results were processed with SPSS v.20.0 for Windows. Results:The majority of respondents are general practitioners in dentistry, 68.5%, 26.3% have a specialty in prosthetic dentistry, and the rest 5,2% are dentists with a specialty in oral surgery and operative dentistry. Although digital technologies are increasingly entering dentistry and in particular implantology, most of them indicate that they prefer conventional methods of taking impressions and prosthodontics on implants. Conclusion:From the present study, it can be concluded that the incorporation of digital technologies into clinical practice still presents some difficulty for dental practitioners.

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Accuracy of digital tooth preparations recorded using the plaster model scanning technique and two silicone impression scanning techniques

Shen,

Gong,

Wang

et al. 2024

Heliyon

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Clinical evaluation of marginal fit of uncemented CAD-CAM monolithic zirconia three-unit restorations in anterior areas, using scannable and conventional polyvinyl siloxane impression materials

Cited by 5 publications

References 37 publications

Evaluation of Diverse Digital Impression Systems on the Three-Dimensional (3D) Fit of All-Ceram CAD/CAM Crowns

Evaluation of Diverse Digital Impression Systems on the Three-Dimensional (3D) Fit of All-Ceram CAD/CAM Crowns

Implant impression technique preferences – survey study among dental practitioners

Accuracy of digital tooth preparations recorded using the plaster model scanning technique and two silicone impression scanning techniques

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