Home | About us | Editorial board | Ahead of print | Current issue | Archives | Search | Submit article | Instructions | Subscribe | Advertise | Contact us |  Login 
National Journal of Maxillofacial Surgery
Print this page Email this page Small font sizeDefault font sizeIncrease font size
Users Online: 4830
Year : 2022  |  Volume : 13  |  Issue : 3  |  Page : 443-448

Biomechanical evaluation of different fixation techniques following modified sagittal split ramus osteotomy using buccal step: An in vitro study

Department of Oral and Maxillofacial Surgery, Bharati Vidyapeeth Dental College and Hospital, Pune, Maharashtra, India

Correspondence Address:
Dr. Pratik Dhananjay Warade
Department of Oral and Maxillofacial Surgery Bharati Vidyapeeth Dental College and Hospital, Pune, Maharashtra
Login to access the Email id

Source of Support: None, Conflict of Interest: None

DOI: 10.4103/njms.njms_321_21

Rights and Permissions

Objective: This study was to evaluate the efficacy of three different designs of rigid fixation using polyurethane hemimandible replicas following modified sagittal split ramus osteotomy with buccal step. Materials and Methods: Forty-eight polyurethane hemimandible replicas have been used. Following the osteotomy and fixation, each specimen has been mounted on a Universal Testing unit using a prefabricated customized jig and has been tested to a range of vertical forces starting from 0 N on the incisal edge of lateral incisor and lateral forces of on lateral surface of mandibular first molar. Progressive load has been applied until a deflection of 10 mm was observed. SPSS version 20 has been used for analyzing the data. The biomechanical stability of different osteosynthesis has been compared using a one-way ANOVA with post hoc Bonferroni test. P ≤ 0.05 will be considered statistically significant. Results: After advancement of 7 mm, comparison of vertical load and lateral load among different miniplate systems showed that load was maximum in bicortical screws in inverted L pattern followed by T-shaped miniplate system and was least in single six-hole straight plate (0.001) at P ≤ 0.05. Conclusion: Our study concludes that bicortical screws in inverted “L” pattern are more resistant to lateral load as well as on the application of vertical load when compared to other fixation techniques and statistical difference was evident.

Print this article     Email this article
 Next article
 Previous article
 Table of Contents

 Similar in PUBMED
   Search Pubmed for
   Search in Google Scholar for
 Related articles
 Citation Manager
 Access Statistics
 Reader Comments
 Email Alert *
 Add to My List *
 * Requires registration (Free)

 Article Access Statistics
    PDF Downloaded27    
    Comments [Add]    

Recommend this journal