scholarly journals Efficient palatal expansion with a quadhelix appliance: an in vitro study using an experimental dental arch model

2011 ◽  
Vol 34 (4) ◽  
pp. 442-446
Author(s):  
Y. Honme ◽  
M. Motoyoshi ◽  
A. Shinohara ◽  
T. Shigeeda ◽  
N. Shimizu
Keyword(s):  
In Vitro Study ◽  
Vitro Study ◽  
Dental Arch ◽  
Arch Model ◽  
Palatal Expansion

scholarly journals Linear Accuracy of Full-Arch Digital Models Using Four Different Scanning Methods: An In Vitro Study Using a Coordinate Measuring Machine

2020 ◽  
Vol 10 (8) ◽  
pp. 2741 ◽  
Author(s):  
Young Hyun Kim ◽  
Sang-Sun Han ◽  
Yoon Joo Choi ◽  
Chang-Woo Woo
Keyword(s):  
Coordinate Measuring Machine ◽  
In Vitro Study ◽  
Dental Arch ◽  
Accuracy Evaluation ◽  
Arch Model ◽  
Linear Measurements ◽  
Scanning Method ◽  
True Model ◽  
Measuring Machine

Improving the accuracy of the digital model is essential for the digitalization of the dental field. This study introduced a novel method of objective accuracy evaluation of digitized full dental arch model using coordinate measuring machine (CMM). To obtain a true linear measurement value using the CMM, 17 reference balls were attached to the typodont, and 12 measurements between balls on the X-(width), Y-(length), and Z-axes (height) were performed automatically. A rubber impression and a plaster cast replica of the typodont with balls were fabricated, and they were digitized with following methods: (a) true model intraoral scans; (b) impression cone-beam computed tomography (CBCT) scans; (c) cast CBCT scans; and (d) cast extraoral scans. Each scanning method was performed 20 times. Twelve linear measurements on the digitized models were automatically made using software. The one-sample t-test and one-way analysis of variance were used for measurement accuracy analysis. The cast extraoral scan was most accurate on X- and Y-axes, while impression CBCT was the most accurate on Z-axis. Over all axes, the intraoral scan resulted in the most deviation from the true model, and the reproducibility of each scan was also low. Extraoral scan shows high precision on width and length, and impression CBCT is advantageous for dental work where height factor is of importance.

Mechanical Reaction of Facial Skeleton to Rapid Palatal Expansion Devices using Laser Holography: An in vitro Study

2013 ◽  
Vol 47 ◽  
pp. 426-432
Author(s):  
Revathi Peddu ◽  
Uma Maheswari ◽  
Kalyani Sreedhar Mallavarapu ◽  
Shyam Kumar Bandaru ◽  
Sai Prakash Adusumilli ◽  
...  
Keyword(s):  
In Vitro Study ◽  
Vitro Study ◽  
Facial Skeleton ◽  
Palatal Expansion ◽  
Rapid Palatal Expansion ◽  
Laser Holography

Mechanical Reaction of Facial Skeleton to Rapid Palatal Expansion Devices using Laser Holography: An in vitro Study

2013 ◽  
Vol 47 (4_suppl4) ◽  
pp. 426-432
Author(s):  
Revathi Peddu ◽  
Uma Maheswari ◽  
Kalyani Sreedhar Mallavarapu ◽  
Shyam Kumar Bandaru ◽  
Sai Prakash Adusumilli ◽  
...  
Keyword(s):  
In Vitro Study ◽  
Vitro Study ◽  
Facial Skeleton ◽  
Palatal Expansion ◽  
Rapid Palatal Expansion ◽  
Laser Holography

Accuracy of complete-arch model using an intraoral video scanner: An in vitro study

2016 ◽  
Vol 115 (6) ◽  
pp. 755-759 ◽  
Author(s):  
Il-Do Jeong ◽  
Jae-Jun Lee ◽  
Jin-Hun Jeon ◽  
Ji-Hwan Kim ◽  
Hae-Young Kim ◽  
...  
Keyword(s):  
In Vitro Study ◽  
Vitro Study ◽  
Arch Model

scholarly journals Complete-Arch Accuracy of Four Intraoral Scanners: An In Vitro Study

Healthcare ◽  
2021 ◽  
Vol 9 (3) ◽  
pp. 246
Author(s):  
Giordano Celeghin ◽  
Giulio Franceschetti ◽  
Nicola Mobilio ◽  
Alberto Fasiol ◽  
Santo Catapano ◽  
...  
Keyword(s):  
Reference Model ◽  
In Vitro Study ◽  
Reference Points ◽  
Dental Arch ◽  
Arch Model ◽  
Linear Measurements ◽  
Stl File ◽  
Digital Reference ◽  
Digital Impressions

The purpose of this study is to define the accuracy of four intraoral scanners (IOS) through the analysis of digital impressions of a complete dental arch model. Eight metal inserts were placed on the model as reference points and then it was scanned with a laboratory scanner in order to obtain the reference model. Subsequently, the reference model was scanned with four IOS (Carestream 3600, CEREC Omnicam, True Definition Scanner, Trios 3Shape). Linear measurements were traced on an STL file between the chosen reference points and divided into four categories: three-element mesiodistal, five-element mesiodistal, diagonal, and contralateral measurements. The digital reference values for the measurements were then compared with the values obtained from the scans to analyze the accuracy of the IOS using ANOVA. There were no statistically significant differences between the measurements of the digital scans obtained with the four IOS systems for any of the measurement groups tested.

scholarly journals In Vitro Study Regarding the Biomechanical Behaviour of Bone and Periodontal Splints I.Model validation

2019 ◽  
Vol 56 (4) ◽  
pp. 1013-1020
Author(s):  
Raluca Maria Vieriu ◽  
Oana Tanculescu ◽  
Florentina Mocanu ◽  
Sorina Mihaela Solomon ◽  
ioan Gabriel Sandu ◽  
...  
Keyword(s):  
Bone Resorption ◽  
In Vitro Study ◽  
Dental Arch ◽  
Bone Strain ◽  
Arch Model ◽  
Mandibular Bone ◽  
Different Types ◽  
The Subject ◽  
Two Stages

This paper is part of a larger study that aims to evaluate the biomechanical behaviour of mandibular bone and periodontal splinting systems subjected to different occlusal forces by means of electric resistive tensometry (ERT). The research was based on the following premise: the degree of bone resorption and periodontal type of splint influence the deformation of the mandibular bone. The study was conducted in two stages: first, the validation of the mandibular dental arch model, which is the subject of the present article, and second, the evaluation of mandibular bone strain in case of different types of bone loss and periodontal splints, which is the subject of a second article.

Accuracy of Three Digitization Methods for the Dental Arch with Various Tooth Preparation Designs: An In Vitro Study

2018 ◽  
Vol 28 (2) ◽  
pp. 195-201 ◽  
Author(s):  
Kyung Chul Oh ◽  
Bora Lee ◽  
Young-Bum Park ◽  
Hong Seok Moon
Keyword(s):  
In Vitro Study ◽  
Vitro Study ◽  
Dental Arch ◽  
Tooth Preparation
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