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Análise Tomográfica E Em Modelos De Gesso Das Alterações Dentoalveolares Produzidas Pelo Arco De Intrusão De Connecticut: Estudo Clínico Randomizado Prospectivo
| Content Provider | Semantic Scholar |
|---|---|
| Author | Giunco, Joseli Santos De Almeida |
| Copyright Year | 2018 |
| Abstract | Objective: To analyze dentoalveolar alterations in maxillary incisors and first molars caused by the use of intrusion mechanics in patients with mordida profunda. Material and methods: Thirty-eight patients with permanent denture and mordida profunda were divided into 2 groups: Group 1, presenting 19 patients with a mean age of 14.7 years (dp: 1.6) and an mordida profunda of 4.5mm ( dp: 1.2mm) were treated using Nickel Titanium Alloy superior Connecticut Intrusion Arch (CIA-Ortho Organizers, CA, USA). Group 2, consisting of 19 patients with a mean age of 15.4 (dp: 1.8) and an mordida profunda of 4.1 mm (dp: 1.1 mm) were treated with conventional alignment and leveling mechanics and used for comparison as a "control group". The alterations were evaluated through three methods: 1st Tomographic, where the radicular resorption of the upper incisors was measured; 2o Cephalometric, where the sagittal and vertical alterations of the upper incisors and first molars were measured; and 3oDigital gypsum models where the alterations in the vertical and transverse dimensions of the upper arch were measured, correlating the intrusion of the incisors with their gingival margins in the group 1,. For the analysis of the tomographic and cephalometric data the Dolphin Imaging & Management, Calif. Program was used. And 3D measurements and custom analysis to evaluate the plaster models of the Scanner 3 Shape R700. The paired T-test was used to evaluate systematic intra-examiner error. For the casual error, the Dahlberg calculation was used. The Shapiro-Wilk normality test was applied. The Wilcoxon test was used to compare the analyzes. In addition, the Mann-Whitney test was used to compare the groups in the tomographic analysis and ANOVA followed by the Sidak Post-Test, evaluating the effect of the interaction between time and treatment. Results: In the tomographic analysis, significant differences were found in both groups between T1 and T2 indicating that root resorption occurred, but no significant root resorption was observed in the mean of the four upper incisors of G1 (-0.89mm) compared to G2 , treated with conventional mechanics (-0.38 mm).In the cephalometric analysis, the G1 presented vestibularization of the incisors (2.4o), a molar moment of -2.5o, a molar extrusion of 0.20mm and an increase of the distance between incisor and molar of 1,5mm; the G2 presented significant difference only in the distance between the incisal edge of the upper central incisor and the palatal plane (-0.8 mm). In the analysis of gypsum models, the G1 presented statistical differences in almost all the variables studied and the increase in the inter-molar distance of 0.35 mm corroborates with the results of the cephalometric analysis of the study. Conclusion: It can be concluded that the intrusion mechanics with the Connecticut intrusion arch did not promote greater root resorption of the maxillary incisors when compared to a group that only suffered alignment of the arches. Significant dentoalveolar changes were observed when cephalometric evaluation of maxillary incisors and molars was performed comparing the two groups. In addition, intragroup (G1) transverse changes were observed. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://repositorio.pgsskroton.com.br/bitstream/123456789/19276/1/TESE%20DOUTORADO%20-%20JOSELI%20SANTOS%20DE%20ALMEIDA%20GIUNCO.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
