Aim:The contemporary article aims to review and compare various literatures concerning different conclusions regarding the correlation between tooth size discrepancy (TSD) and Angle's malocclusion groups. Background: Acquiring the ideal occlusion plays one of the major roles while designing the treatment plan for an orthodontic patient, any alterations in the individual tooth sizes are called TSD and will hinder this prime requirement. By determining the correct tooth size ratio, it further helps in acquiring the accurate interdigitation, balanced occlusion, and also predicting the orthodontic treatment results. Various investigations were carried out to know the correlation between tooth size discrepancies and different malocclusion groups, of which, a few reported a statistically significant difference whereas others reported no significant difference. Review results: A computerized database quest was operated utilizing the Medline database (Pubmed/Medline) for original research and review articles. Publications between 1946 and 2018 were included. Four hundred twenty-one articles were recovered from database search and, among them, 66 articles were selected to review the full-article. Conclusion: Although a comparison was done between the tooth-size ratios and malocclusion groups (classes I, II, and III), many investigators noted no significant difference but there is an inadequacy in the data particularly related to subgroups of Angle's classification of malocclusion among these investigations; therefore, further studies are required to interpret this correlation. Clinical significance: As there is high incidence of tooth size discrepancies noted in the previous literature orthodontist, Bolton's analysis regardless of malocclusion group, sex, and ethnicity is highly recommended.
In the domain of orthodontics, plaster models are contemplated as one of the important tools for diagnosis and treatment planning. In Dentistry, technological advancement has developed in the section of diagnostic devices, for example, the utilization of a 3D intraoral scanner, which can convert plaster models into digital models. With in-office utilization of this system, orthodontists can more meticulously and precisely construct custom braces, clear aligners, and orthodontic appliances. The digital data can be stored as a stereolithography file; it eliminates the disadvantages encountered with the storage of plaster models like breakage, space required, and distortion of the plaster models. ITero®element is the intraoral laser scanner (ILS) which utilizes parallel confocal scanning technology which maximizes the accuracy of the scan. By utilizing the iTero scanner, the dental measurement can be performed in OrthoCADTM software which is highly accurate. The objective of the contemporary study is to review the literature of studies on in-vivo and ex-vivo scanning with the iTero system.
The evolution of composite resins stratification on anterior teeth is due to advances in the mechanical and optical properties of these materials. However, to obtain an optimal results, it is necessary to use a rigorous and precise method. This requires an observation of the colorimetric properties of the adjacent teeth. In addition, the use of composite enamel and dentine, combined with a finishing and polishing steps to recreate the internal and external architecture. Once these conditions are met, the practitioner is likely to succeed in a functional restoration similar to the natural tooth.
Aim: This investigation aimed to compare the accuracy of Bolton's analysis on plaster models of various malocclusion groups by utilizing digital calipers and iTero scanner. Materials and Methods: The data consisted maxillary and mandibular plaster study casts of 61 patients (Class I-20, Class II-20, Class III-21) there were 31 males and 30 females. iTero®element scanner was utilized to scan the models and Bolton's analysis was performed on digital models. Also, the Digital caliper was utilized to perform the Manual measurements. Mesiodistal tooth widths, Anterior and Overall Bolton ratio was measured utilizing OrthoCAD™ software on digital models and plaster models with digital calipers. Statistical analysis was performed utilizing One-way ANOVA and independent T-test. Results: Results revealed anterior and overall Bolton ratios showed significant differences (P < 0.05) for the measurements performed utilizing digital models. Anterior ratio for (Group 1) iTero measurements depicted the statistical significant value (P < 0.03) and overall ratio for (Group 2) digital caliper measurements depicted the statistical significant value (P < 0.02). Conclusion: With the introduction of intra-oral laser scanners it has become more convenient for the practitioner to perform the intra-oral digital scanning and carry out the model analysis digitally and iTero scanner can also be utilized extra-orally to perform the scanning and model analysis. Our study concludes that intra-oral laser scanner like iTero is more convenient for an orthodontist, and can be utilized for extra-oral scanning of orthodontic dental models as the measurements obtained on digital models was as accurate as the conventional method.
In contemporary orthodontics intrusion of posterior molars without the extrusion of anterior dentition is quite challenging but with the help of temporary anchorage devices like miniscrews it becomes relatively easier for an orthodontist to achieve the good treatment results. Orthodontic anchorage is one the important factor for orthodontic treatment to be successful and conventional orthodontic appliances like headgear and intra-oral elastics are usually used but now a days mini implants are being utilized as skeletal anchorage devices instead of convention orthodontic appliances. According to recent studies relatively higher number of patients are choosing miniscrews over extraction of teeth although very few had previous knowledge of mini-implants. According to many orthodontist, miniscrews were easier to place and enhanced the orthodontic treatment procedures and results. The prime purpose of using mini-implants as temporary anchorage because they provide support through osseointegration. Because of close contact between bone and implant junction osseointegration takes place. Beside many advantages there are also fewer disadvantages of using miniscrews as anchorage devices such as higher cost, scar formation, technique sensitive, and longer duration required for osseointegration. Miniscrews can be utilized for various orthodontic treatment procedures intrusion of dentition, retraction of anterior dentition, individual tooth extrusion or intrusion. It helps in intrusion of dentition without the extrusion anchorage teeth. In prosthetic procedures when intrusion or extrusion of teeth is required miniscrews can be used. There are also few complications reported after miniscrew placement like trauma to surrounding tissues, infection, peri-implantitis, inflammation, orthodontic loading affecting stationary anchorage resulting in its failure, soft tissue covering the miniscrew head area. The main aim of this review was to enlighten the types, advantages, disadvantages and acceptance of miniscrews in field of orthodontics.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.