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. 2013 Jul;4(2):426-30.
doi: 10.4103/0976-9668.117028.

Median mandibular flexure at different mouth opening and its relation to different facial types: A prospective clinical study

Mandava Prasad  1 , Mohammed Z Hussain, Sharath K Shetty, T Ashok Kumar, Mohit Khaur, Suja A George, Sameen Dalwai
Affiliations
Free PMC article

Median mandibular flexure at different mouth opening and its relation to different facial types: A prospective clinical study

Mandava Prasad et al. J Nat Sci Biol Med. 2013 Jul.
Free PMC article

Abstract

Objective: To measure the arch width and Median mandibular flexure (MMF) values at relative rest and maximum jaw opening in young adults with Dolichofacial, Mesofacial, and Brachyfacial types and tested whether the variation in the facial pattern is related to the MMF values in South Indian population.

Materials and methods: This Prospective clinical study consisted of sample of 60 young adults. The subjects were grouped into 3 groups: Group 1: Brachyfacial, Group 2: Mesofacial and types, Group 3: Dolichofacial. Impressions were taken for all the 60 subjects and the casts were scanned and digitized. The intermolar width was measured for Dolichofacial, Mesofacial, and Brachyfacial subjects at relative rest (R) and maximum opening (O).

Results: The statistical analysis of the observations included Descriptive and Inferential statistics. The statistical analysis was executed by means of Sigma graph pad prism software, USA Version-4. Kruskal wallis (ANOVA) followed by Dunns post hoc test was performed. Mann Whitney U-test was performed to assess the difference in MMF values between Males and Females of the three groups. The Mean (SD) Mandibular flexure in individuals with Brachyfacial type was 1.12 (0.09), Mesofacial type was 0.69 (0.21), and Dolichofacial type was 0.39 (0.08).

Conclusions: The Mean intermolar width was maximum in Brachyfacial type and minimum in Dolichofacial type. MMF was maximum at the maximum mouth opening position and was maximum in individuals with Brachyfacial type.

Keywords: Brachyfacial; dolichofacial; median mandibular flexure; mesofacial.

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Conflict of interest statement

Conflict of Interest: None declared.

Figures

Figure 1
Figure 1
Brachyfacial, mesofacial and dolicofacial types
Figure 2
Figure 2
3M empress Putty Material, Impressions in three positions of the mandible
Figure 3
Figure 3
Relative rest position of the mandible, Minimum opening and Maximum opening of mouth
Figure 4
Figure 4
Measurement of inter molar width
Figure 5
Figure 5
Difference between Mean MMF values of 3 Groups
See this image and copyright information in PMC

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References

    1. Lee RT. Arch width and form: A review. Am J Orthod Dentofacial Orthop. 1999;115:305–13. - PubMed
    1. Abu Alhaija ES, Al Zo’ubi IA, Al Rousan ME, Hammad MM. Maximum occlusal bite forces in Jordanian Individuals with different dentofacial vertical skeletal patterns. Eur J Orthod. 2010;32:71–7. - PubMed
    1. Abdel-Latif HH, Hobkirk JA, Kelleway JP. Functional mandibular deformation in edentulous subjects treated from with dental implants. Int J Prosthodont. 2000;13:513–9. - PubMed
    1. Du Brul EL, Sicher H. Springfield III: Charles.C Thomas Publisher; 1954. The adaptive chin.
    1. Hobkirk JA, Schwab J. Mandibular deformation in subjects with osseointegratedimplants. Int J Oral Maxillofac Implants. 1991;6:319–28. - PubMed

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