A comparison of chewing efficiency and teeth contacts before and after treatment in patients with posteriorly positioned lower jaw in patients with extraction treatment plan and non extraction treatment plan.
- Conditions
- Skeletal Class II malocclusion with ANB more than 5° with convex profile.
- Registration Number
- CTRI/2018/04/013111
- Lead Sponsor
- Dr Kriti Sharma Rai
- Brief Summary
**Aim:** The aim of this study was to evaluate and compare changes in masticatory efficiency and the functional occlusal contact relationship in patients treated with upper first premolar extraction cases and case with Fixed Functional Appliances (non-extraction cases). **Materials and Methods:** Two groups with ten patients each were selected. Group I was treated with upper first premolar extraction while Group II cases were treated with Fixed Functional Appliance (MPA IV). Masticatory efficiency was checked using spectrophotometry while occlusal contacts were checked using Tek Scan. Records were taken atT1: After completion of levelling and alignment and T2:- After space closure in upper first premolar extraction cases and after 6 months of Fixed functional appliance placement. **Results:** There was a significant difference during inter group comparison however during intra group comparison no statistically significant difference was found for masticatory efficiency. When compared between the two groups, there was reduced occlusal contact in Group I and increased duration for performing different movements. **Conclusions:** Skeletal Class II patients when treated with Fixed Functional appliance (non-extraction), there was an increase in masticatory efficiency, as they are corrected to Class I malocclusion. When compared between the two groups, there were reduced occlusal contact in Group I and reduced duration for performing different movements.
**Key words:** Masticatory efficiency, occlusal contacts, Fixed Functional appliance
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- Completed
- Sex
- All
- Target Recruitment
- 20
- •All patients having Skeletal Class II malocclusion with ANB more than 5° with convex profile.
- •Increased Overjet.
- •Normal or marginally low angle cases i.e. SN-GoGn ≤ 32°.
- •No history of previous orthodontic treatment.
- •Class II patients that need to be treated either by camouflage i.e uniarch extraction or fixed functional appliance.
- •No history of any systemic illness.
- •Pre- treatment dentition with at least half the cusp width of Class II molar relation.
- •Cases requiring all 4 first premolar extractions.
- •Patients having any apparent clinical muscular problem/dysostosis.
- •Patients having tempomandibular joint dysfunction.
- •Patient having Mandibular Incisor plane angle ≥100°.
- •Patient having severely attrited dentition/fractured/mobile teeth / Amelogenesis imperfecta/ erosion/bruxism.
- •Patient having skeletal facial asymmetry and requiring definite surgical treatment.
Study & Design
- Study Type
- Interventional
- Study Design
- Not specified
- Primary Outcome Measures
Name Time Method Masticatory Efficiency and 6 months Occlusal Contacts in upper first premolar extraction and fixed functional appliance cases. 6 months
- Secondary Outcome Measures
Name Time Method Occlusal Contacts in upper first premolar extraction and fixed functional appliance cases. 6 months
Trial Locations
- Locations (1)
/Institute of Dental Studies and Technologies
🇮🇳Ghaziabad, UTTAR PRADESH, India
/Institute of Dental Studies and Technologies🇮🇳Ghaziabad, UTTAR PRADESH, IndiaDr Kriti Sharma RaiPrincipal investigator9627615848dr.kriti86in@gmail.com