Effects of labial and lingual retraction and intrusion force on maxillary central incisor with varying collum angles: A three-dimensional finite elemental analysis

2017 ◽  
Vol 51 (1) ◽  
pp. 28-37
Author(s):  
Sandesh S Pai ◽  
Suchareeta Panda ◽  
Vinaya Pai ◽  
M Anandu ◽  
E Vishwanath ◽  
...  
Keyword(s):  
Elemental Analysis ◽  
Three Dimensional ◽  
Central Incisor ◽  
Maxillary Central Incisor

scholarly journals Effects of labial and lingual retraction and intrusion force on maxillary central incisor with varying collum angles: A three-dimensional finite elemental analysis

2017 ◽  
Vol 51 (1) ◽  
pp. 28-37 ◽  
Author(s):  
Sandesh S Pai ◽  
Suchareeta Panda ◽  
Vinaya Pai ◽  
M Anandu ◽  
E Vishwanath ◽  
...  
Keyword(s):  
Elemental Analysis ◽  
Three Dimensional ◽  
Central Incisor ◽  
Maxillary Central Incisor

Endodontic Management of Canal Calcification in Maxillary Central Incisor Using 3D Prototyping Technique: A Case Report

2020 ◽  
Vol 11 (1) ◽  
pp. 93-96
Author(s):  
Suryasowjanya Doranala ◽  
Harikumar Vemisetty ◽  
Rajani Punna ◽  
Aditya Mohan Alwala
Keyword(s):  
Case Report ◽  
Imaging Techniques ◽  
Three Dimensional ◽  
Conventional Technique ◽  
Cone Beam ◽  
Central Incisor ◽  
Cavity Preparation ◽  
Present Case Report ◽  
Maxillary Central Incisor ◽  
Tooth Structure

Teeth with calcific metamorphosis pose a challenge to the endodontist in achieving proper access, identification, and debridement of the root canal. With the conventional technique, radiographs and bur orientation have dictated the access cavity preparation, which leads to the removal of more sound tooth structure and iatrogenic errors. To overcome these issues, the recent diagnostic imaging techniques such as cone beam computed tomography followed by three-dimensional fabrication of template have been proposed, which aid the clinician to accurately locate and negotiate the obliterated canal. The present case report describes the importance of conservative access cavity preparation with the use of the guided endodontic technique for the treatment of calcified canals in the maxillary central incisor.

scholarly journals Surgical Repositioning of an Inverted Developing Incisor Assisted by 3D Technology

2021 ◽  
Vol 11 (11) ◽  
pp. 4827
Author(s):  
Mi-Hyun Seo ◽  
Hoon-Joo Yang ◽  
Jeong-Joon Han ◽  
Ik-Jae Kwon ◽  
Hoon Myoung ◽  
...  
Keyword(s):  
Computed Tomography ◽  
3D Printing ◽  
Three Dimensional ◽  
Central Incisor ◽  
Supernumerary Teeth ◽  
3D Technology ◽  
Maxillary Central Incisor ◽  
Ectopic Eruption ◽  
Initial Stage ◽  
Virtual Images

Permanent central incisor impaction is very rare, and causes of impaction include adjacent supernumerary teeth, odontoma, and trauma. Surgical repositioning is a treatment option for teeth with ectopic eruption pathways. In this case report, an inverted developing maxillary central incisor was surgically repositioned at the initial stage of root development. Three dimensional (3D) virtual images were acquired using computed tomography, and a replica was produced by LCD-based masked stereolithography 3D printing. A resin for 3D printing was approved as a medical device and used as a 3D printing replica. Further, 3D technology has been found to be useful for successful tooth repositioning surgery.

Stress distribution of esthetic posts in the restored maxillary central incisor: Three-dimensional finite-element analysis

2021 ◽  
Vol 18 (1) ◽  
pp. 10
Author(s):  
Mohammad Alihemmati ◽  
Sina Jafari ◽  
AliJamali Ghomi ◽  
SayedShojaedin Shayegh ◽  
Kamran Kargar
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Stress Distribution ◽  
Three Dimensional ◽  
Central Incisor ◽  
Element Analysis ◽  
Maxillary Central Incisor ◽  
Dimensional Finite Element ◽  
Three Dimensional Finite Element

Three-dimensional finite element simulation of intrusion of the maxillary central incisor

2016 ◽  
Vol 36 (2) ◽  
pp. 385-390 ◽  
Author(s):  
Wojciech Ryniewicz ◽  
Anna M. Ryniewicz ◽  
Łukasz Bojko ◽  
Piotr Pełka ◽  
Jolanta Filipek ◽  
...  
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Three Dimensional ◽  
Central Incisor ◽  
Maxillary Central Incisor ◽  
Element Simulation ◽  
Dimensional Finite Element ◽  
Three Dimensional Finite Element

scholarly journals Analysis of colorimetric parameters of international commission on illumination L*a*b* system in the color of maxillary central incisors

2020 ◽  
Vol 73 (9-10) ◽  
pp. 309-314
Author(s):  
Aleksandra Maletin ◽  
Milica Jeremic-Knezevic ◽  
Daniela Djurovic-Koprivica ◽  
Tanja Veljovic ◽  
Bojana Ramic ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Spectrophotometric Analysis ◽  
International Commission ◽  
Maxillary Incisor ◽  
Blue Color ◽  
Central Incisor ◽  
Color Tone ◽  
Tooth Color ◽  
Maxillary Central Incisor ◽  
Significant Difference

Introduction. Tooth color can be represented in a three-dimensional color system by applying L* (lightness), a* (red-green color tone) and b* (yellow-blue color tone) coordinates. Clinically significant color difference, Delta-E, can be expressed in units that are correlated with visual perception using the International Commission on Illumination L*a*b* system. The aim of the study was spectrophotometric analysis of the natural maxillary central incisor color, and to establish any gender-related differences in lightness, red-green tone, and yellow-blue tone coordinates. Material and Methods. The study included 80 students (40 male and 40 female, with an average age of 22 years). The color of the maxillary right central incisor was determined using an intraoral spectrophotometer and VITAPAN Classical and VITA 3D-Master color shade guides. Lightness, red-green tone, and yellow-blue tone values were recorded for each result. The obtained data were processed by using ?2, Student?s t-test and Mann-Whitney test. Results. Results showed no statistically significant gender-related difference in color according to the VITApan Classical and VITA 3D-Master color key. No difference was found in the lightness of the central maxillary incisor between genders, or in terms of red-green tone (p = 0.860573). A statistically significant difference was found when observing the sex-related yellow-blue tone of the color of the central maxillary incisor. Conclusion. The analysis of colorimetric parameters of the International Commission on Illumination L*a*b* system provides useful information about the tooth color in the examined population, while potentially revealing differences in lightness, red-green tone and yellow-blue tone between genders.

scholarly journals Sagittal Relationship between the Maxillary Central Incisors and the Forehead in Digital Twins of Korean Adult Females

2021 ◽  
Vol 11 (3) ◽  
pp. 203
Author(s):  
Seoung-Won Cho ◽  
Soo-Hwan Byun ◽  
Sangmin Yi ◽  
Won-Seok Jang ◽  
Jong-Cheol Kim ◽  
...  
Keyword(s):  
Orthodontic Treatment ◽  
Three Dimensional ◽  
Careful Consideration ◽  
Control Group ◽  
3D Analysis ◽  
Central Incisor ◽  
Maxillary Central Incisor ◽  
Digital Twins ◽  
Before And After ◽  
Korean Adult

Objective: Digital twins of adult Korean females were created as a tool to evaluate and compare the sagittal relationship between the maxillary central incisors and the forehead before and after orthodontic treatment. Methods: Digital twins were reconstructed for a total of 50 adult female patients using facial scans and cone-beam computed tomography (CBCT) images. The anteroposterior position of the maxillary central incisor and the forehead inclination were measured. Results: The control group presented a mean of 6.7 mm for the sagittal position and 17.5° for forehead inclination. The study group showed a mean of 9.3 mm for the sagittal position and 13.6° for forehead inclination. Most Korean females seeking orthodontic treatment had their maxillary central incisor anterior to the glabella. In contrast, fewer Korean females who completed their orthodontic treatments had their maxillary central incisor anterior to the glabella. Furthermore, patients who had completed the orthodontic treatment were more likely to have the maxillary central incisor between the forehead facial axis and glabella. Conclusion: The use of digital twins for three-dimensional (3D) analysis of the profile implies a high clinical significance. In addition, as the facial profile of Koreans is different from that of Caucasians, careful consideration should be made when setting treatment goals for the anteroposterior position of the maxillary central incisors.

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