vitro study
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2022 ◽  
Vol 140 ◽  
pp. 104297
Author(s):  
Fengyang Li ◽  
Xue Gou ◽  
Dan Xu ◽  
Dan Han ◽  
Kai Hou ◽  
...  

2022 ◽  
Vol 140 ◽  
pp. 104281
Author(s):  
Toru Hyakutake ◽  
Hiroki Abe ◽  
Yohei Miyoshi ◽  
Manabu Yasui ◽  
Rina Suzuki ◽  
...  

2022 ◽  
Vol 79 ◽  
pp. 105291
Author(s):  
Blondet Antonine ◽  
Martin Guillaume ◽  
Durand Philippe ◽  
Perrard Marie-Hélène

2022 ◽  
Vol 74 ◽  
pp. 101684
Author(s):  
Akram Mirzaei ◽  
Mohammad Reza Akbari ◽  
Seyed Saeed Tamehri Zadeh ◽  
Fatemeh Khatami ◽  
Rahil Mashhadi ◽  
...  

2022 ◽  
Author(s):  
J Gao ◽  
L Jia ◽  
X Tan ◽  
H Yu

SUMMARY Objective: This in vitro study aimed to evaluate the preservation of enamel after tooth preparation for porcelain laminate veneers (PLVs) at different preparation depths based on a fully digital workflow. Methods and Materials: Sixty extracted human maxillary anterior teeth, including 20 maxillary central incisors (MCIs), 20 maxillary lateral incisors (MLIs), and 20 maxillary canines (MCs) underwent microcomputed tomography (CT) scanning, and were reconstructed as three-dimensional (3D) enamel and dentin models. Subsequently, the three-dimensional (3D) enamel models were imported into Materialise, where each enamel model underwent seven types of virtual preparation for PLVs at preparation depths at 0.1-mm increments from 0.1-0.3-0.5 mm (D1) to 0.7-0.9-1.1 mm (D7). The enamel surface was depicted by merging the virtual preparation and, respective, dentin models. The enamel area and prepared surface were measured to calculate the percentage of enamel (R%). The data were statistically analyzed using one-way analysis of variance (ANOVA) (α=0.05). Results: The group-wise mean (standard deviation) R values for the MCIs were as follows: D1-D3: 100.00 (0) each, and D4-D7: 74.70 (2.45), 51.40 (5.12), 24.40 (3.06), and 0.00 (0), respectively. The group-wise mean R values for the MLIs were 100.00 (0), 73.70 (3.40), 53.50 (3.44), 25.20 (3.79), and 0.90 (0.99) for the D1-D5 groups, respectively; and 0.00 (0) each for the D6-D7 groups. The group-wise mean (standard deviations) R values for the MCs were as follows: D1-D3: 100.00 (0) each, and D4-D7: 99.00 (1.34), 77.10 (3.28), 74.20 (3.61), and 52.20 (4.09), respectively. The one-way ANOVA revealed significant differences between the seven groups in the MCIs, MLIs, and MCs (p<0.05). Conclusions: Our results recommended preparation depths of up to 0.3-0.5-0.7 mm (MCIs), 0.1-0.3-0.5 mm (MLIs), and 0.4-0.6-0.8 mm (MCs) to facilitate complete intraenamel preparation. Moreover, 50% enamel was preserved at preparation depths of 0.5-0.7-0.9 mm (MCIs), 0.3-0.5-0.7 mm (MLIs), and 0.7-0.9-1.1 mm (MCs).


2022 ◽  
Vol 11 (1) ◽  
Author(s):  
Sarah Fink ◽  
Anke Burmester ◽  
Uta‐Christina Hipler ◽  
Claudia Neumeister ◽  
Marcus R. Götz ◽  
...  

Author(s):  
Lucas Bonfanti Silvestrin ◽  
Isadora Martini Garcia ◽  
Fernanda Visioli ◽  
Fabrício Mezzomo Collares ◽  
Vicente Castelo Branco Leitune

Author(s):  
Gleysson Matias de Assis ◽  
Victor Diniz Borborema dos Santos ◽  
Salomão Israel Monteiro Lourenço Queiroz ◽  
Adriano Rocha Germano

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