Post-Expansion and end of treatment outcomes of semi-rapid maxillary expansion with a modified removable appliance.

Autor: Banker AM; Department of Orthodontics and Dentofacial Orthopaedics, Pulse Orthodontia, Ahmedabad, Gujarat, India., Thakkar MN; Department of Orthodontics and Dentofacial Orthopaedics, Goenka Research Institute of Dental Science, Gandhinagar, Gujarat, India., Desai BB; Department of Orthodontics and Dentofacial Orthopaedics, Faculty of Dental Science, Dharamsinh Desai University, Nadiad, Gujarat, India., Huja SS; Department of Orthodontics, College of Dental Medicine, University of South Carolina, Charleston SC, USA.
Jazyk: angličtina
Zdroj: Indian journal of dental research : official publication of Indian Society for Dental Research [Indian J Dent Res] 2022 Jan-Mar; Vol. 33 (1), pp. 63-68.
DOI: 10.4103/ijdr.ijdr_210_21
Abstrakt: Context: Maxillary expansion is the mainstay therapy for maxillary transverse deficiency. There has been a constant search for the most effective yet biologically friendly method of maxillary expansion, alternatives being, slow, rapid and semi rapid.
Aims: The purpose of this study was to explore the outcome of palatal expansion achieved using a removable plate and low continuous forces brought about by a semi rapid screw activation protocol.
Settings and Design: Retrospective study.
Methods and Material: Plaster models of 56 consecutive patients treated for maxillary expansion were obtained pre-treatment (T 0 ), post-expansion (T 1 ), and post fixed appliance treatment (T 2 ). The radiographic images of the models were traced using Image J software. Linear and angular measurements were evaluated to measure transverse change.
Statistical Analysis Used: Interclass Correlation Coefficient [ICC] and Dahlberg's formula were used for reliability test. The differences in the mean values between the three duration groups [T 0 , T 1 and T 2 ] were analysed using Analysis of Variance (ANOVA). For multiple comparisons, a post hoc Tukey honestly significant difference (HSD) test was performed.
Results: Significant increase in inter-molar, alveolar and palatal linear widths were observed from T 0 to T 1 with significant relapses from T 1 to T 2 , with an overall net gain remaining at T 2 . Similarly, significant increases in all angular measurements were observed from T 0 to T 1 with significant relapses from T 1 to T 2 and an overall insignificant change at T 2 as compared to T 0 .
Conclusion: The appliance and protocol were effective in producing transverse expansion with minimal molar and alveolar tipping.
Competing Interests: None
Databáze: MEDLINE
Externí odkaz: