• Users Online: 142
  • Home
  • Print this page
  • Email this page
Home About us Editorial board Ahead of print Current issue Search Archives Submit article Instructions Subscribe Contacts Login 
ORIGINAL ARTICLE
Year : 2017  |  Volume : 1  |  Issue : 1  |  Page : 4-12

Assessment of tip, torque, and tooth size discrepancies in Angle's class II division 2 malocclusion


1 Department of Orthodontics and Dento-facial Orthopedics, Parbhani, Maharashtra, India
2 Department of Orthodontics and Dento-facial Orthopedics, JSS Dental College and Hospital, Mysore, Karnataka, India
3 Department of Orthodontics and Dento-facial Orthopedics, Awadh Dental College and Hospital, Jamshedpur, Jharkhand, India
4 Oral Medicine and Radiology, Saraswati-Dhanwantari Dental College and Hospital and Post-Graduate Research Institute, Parbhani, Maharashtra, India

Correspondence Address:
Abhishek Singh Nayyar
Oral Medicine and Radiology, Saraswati-Dhanwantari Dental College and Hospital and Post-Graduate Research Institute, Parbhani, Maharashtra
India
Login to access the Email id

Source of Support: None, Conflict of Interest: None


DOI: 10.4103/ijofb.ijofb_9_16

Get Permissions

Context: Since the introduction of preadjusted edgewise appliances, they are being extensively used all over the world including India. There is a need to establish the tip and torque values for Angle's Class II Division 2 patients to find whether they are comparable or, in variance with those established by Andrews which forms the basis of the orthodontic treatment with most of the most preadjusted edgewise appliance systems. The present study was carried out to study tip, torque, and tooth size discrepancies in patients exhibiting Angle's Class II Division 2 malocclusion with no previous history of orthodontic treatment. Materials and Methods: Thirty patients were selected from the outpatient department who were diagnosed as having Angle's Class II Division 2 malocclusion. Alginate impressions of all the thirty patients were made for both maxillary and mandibular arches, and the study models prepared and crown angulation/tip, crown inclination/torque, and tooth size discrepancies using Bolton's analysis were measured. Results: The upper incisor torque obtained in the present study was considerably lower than all the other studies compared. The torque value of the second mandibular molar obtained in the present study differed from all the previous studies in being much higher and following the progressively increasing negative inclination seen in all other studies from canine to second molar. The lower incisors in the present study were found to be more upright than all other studies with a higher negative torque. The other studies either showed positive torque for central incisors or mild negative torque for both lower incisors. Conclusion: The results of the present study showed some similarities with that of the Andrew's and other studies in the overall pattern of tip and torque values, for example, the positive tip of all maxillary teeth except second molars. The torque values showed a pattern of positive torque for maxillary lateral incisors while negative torque for all the other teeth. However, the values for individual teeth showed many variations.


[FULL TEXT] [PDF]*
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
    Viewed161    
    Printed20    
    Emailed0    
    PDF Downloaded33    
    Comments [Add]    

Recommend this journal