The Journal of Contemporary Dental Practice

Register      Login

SEARCH WITHIN CONTENT

FIND ARTICLE

Volume / Issue

Online First

Archive
Related articles

VOLUME 14 , ISSUE 2 ( March-April, 2013 ) > List of Articles

RESEARCH ARTICLE

A Cephalometric Evaluation of Pretreatment and Post-treatment Outcome using Tetragon Analysis: A Retrospective Study

Sunil S Nayak, C Pushpalatha, Vinny S Bhasin, Praveen Tammannavar, Vinod Viswanathan

Citation Information : Nayak SS, Pushpalatha C, Bhasin VS, Tammannavar P, Viswanathan V. A Cephalometric Evaluation of Pretreatment and Post-treatment Outcome using Tetragon Analysis: A Retrospective Study. J Contemp Dent Pract 2013; 14 (2):238-243.

DOI: 10.5005/jp-journals-10024-1306

Published Online: 01-04-2013

Copyright Statement:  Copyright © 2013; Jaypee Brothers Medical Publishers (P) Ltd.


Abstract

Statement of problem

Few cephalometric analyses have been put forward to assess the treatment outcome after orthodontic treatment. However, these analyses are somewhat complicated and time consuming. The Tetragon analysis is introduced with measurement of treatment outcome as one of its objectives.

Purpose of study

The study was undertaken to evaluate the treatment outcome by checking the skeletal and dental changes using pretreatment and post-treatment radiographs and to evaluate the efficiency of treatment in the Department of Orthodontics, College of Dental Sciences, Davangere, using the Tetragon analysis.

Materials and methods

Records of 35 finished patients with fixed orthodontic therapy using preadjusted edgewise appliance were selected. The samples were analyzed separately for the skeletal parameters consisting of skeletal class I, II and III using Tetragon analysis.

Results

The post-treatment reduction of upper incisor palatal plane angle was found to be statistically significant in skeletal class I (p < 0.01) and skeletal class II patients (p < 0.05). The post-treatment increase in interincisal angle was found to be statistically significant in skeletal class I (p < 0.01) class II patients (p < 0.05).

Conclusion

Fixed appliance therapy reduced the proclination of upper incisors and increased the interincisal angle in skeletal class I and II cases but not in skeletal class III cases. The lower incisal angulation and the maxilla-mandibular plane angle did change significantly and so were the angles of the Trigon. The Tetragon analysis proved easy to measure the treatment outcome.

How to cite this article

Bhasin VS, Tammannavar P, Pushpalatha C, Nayak SS, Viswanathan V. A Cephalometric Evaluation of Pretreatment and Post-treatment Outcome using Tetragon Analysis: A Retrospective Study. J Contemp Dent Pract 2013;14(2):238-243.


PDF Share
  1. Comparing orthodontic treatment outcome between orthodontists and general dentists with the ABO index. Am J Orthod Dentofacial Orthop 2004;126:544-48.
  2. Tetragon: A visual cephalometric analysis. J Clin Orthod 2000;34(6):353-60.
  3. Facial development and tooth eruption. An implant study at the age of puberty. Am J Orthod 1972;62(4):339-83.
  4. Steiner's analysis on adults from Kerala with normal class II and III occlusions – a comparison. J Indian Orthod Soc 1991;22(1):13-19.
  5. Effects of extraction and nonextraction treatment on class I and II subjects. Angle Orthod 2003;73(1):36-42.
  6. Downs’ cephalometric analysis on adults from India. J Indian Dent Assoc 1974;46:437-41.
  7. Cephalometric profile of Aryo-Dravidians -II. J Indian Orthod Soc 1989;20(3):89-94.
  8. Dental and skeletal characteristics of individuals with normal, class II and III occlusions-A cephalometric evaluation using Tetragon analysis. J Indian Orthod Soc 2010;44(4) 63-71.
  9. Master clinician. JCO 2012;16(6):329-42.
  10. Holdaway measurement norms in Turkish adults. Quintessence Int 2002;33:757-62.
  11. Cephalometric norms for the Chinese: A complication of existing data. Aust Orthod J 2002;18:1-26.
PDF Share
PDF Share

© Jaypee Brothers Medical Publishers (P) LTD.