Role of Molar in Anterior Proclination of Teeth – A Retrospective Study

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Authors

  • Soumya S. V.
     Department Dental and Oral Surgery II CMCH, Vellore ,IN
  • Jagadish Ebenezer
     Department Dental and Oral Surgery II CMCH, Vellore ,IN
  • B. Antonisamy
     Department of Biostatistics, CMCH, Vellore, ,IN

Keywords:

Upper molars, Anterior proclination, Retrospective study
Dental Surgery

Abstract

Objectives:
1) To establish if a correlation exists between the position of the molar and anterior proclination of central incisors in Indian population.
2) To broaden our treatment options for gaining space to correct malocclusion. 3) Emphasise the importance of stable posterior occlusion.
Material and methods: The sample consisted of 400 lateral cephalograms of patients reported to CMCH, Vellore for diagnosis and treatment of malocclusion. The interincisal angle and the molar position in maxillae were measured using Kodak software and values were tabulated on Excel worksheets. All statistical analysis were done using Statistical Software STATA version 13.1.
Results: Regression coefficient indicates that 0.4% decrease in the interincisal angle (increase in proclination) for every unit increase in the molar position which is statistically significant at 5% level of significance. The interincisal angle will be 3% higher for male than female which is statistically not significant.
Conclusion:
1) Molar position in maxillae is affected by various factors and its position has an effect on anterior proclination with 0.4% decrease in interincisal angle for every unit increase in molar position which is statistically significant.
2) Anterior occlusion is dependent on posterior occlusion, hence a stable posterior occlusion is a requisite for stability of occlusion.
3) Since the anterior occlusion varies with posterior occlusion other modalities of treatment like distalization of molars and TAD's to decrease anchor loss can be an alternative/ addition to extraction protocol respectively.

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Published

2018-09-18

How to Cite

S. V., S., Ebenezer, J., & Antonisamy, B. (2018). Role of Molar in Anterior Proclination of Teeth – A Retrospective Study. Journal of Pierre Fauchard Academy (India Section), 31(2-4), 51–54. Retrieved from https://informaticsjournals.co.in/index.php/jpfa/article/view/21115

Issue

Volume 31, Issue 2-4, June - December 2017

Section

Original Articles

License

All the articles published in JPFA are distributed under a creative commons license. The journal allows the author(s) to hold the copyright of their work (all usages allowed except for commercial purpose).

 

References

Davies SJ. Malocclusion – a term in need of dropping or redefinition? Br Dent J. 2007;202:519–520.

Angle EH. Classification of malocclusion. Dent Cosmos. 1899;41:248–264. 350–357.

Angle EH. Malocclusion of the Teeth. 7th ed. Philadelphia, PA: SS White Manufacturing Company; 1907:35–39.

Baldridge JP. A study of the relation of the maxillary first permanent molar to the face on Class I and Class II malocclusions. Angle Orthod. 1941;11:100–109.

Wylie WL. The assessment of anterior posterior dysplasia. Angle Orthod. 1947;17:91–109.

Dreilich RC. A cephalometric study of untreated Class II division 1 malocclusion. Angle Orthod. 1948;18:70–75.

Renfroe EW. A study of the facial patterns associated with Class I, Class II division 1, and Class II division 2 malocclusions. Angle Orthod. 1948;19:12–15.

Craig CE. The skeletal patterns characteristic of Class II and Class II division 1 malocclusion, in norma lateralis. Angle Orthod. 1951;21:44–56.

Lande MJ. Growth behavior of the human bony facial profile as revealed by serial roentgenology. Angle Orthod. 1952;22:77– 90.

Riedel RA. The relation of maxillary structures to cranium in malocclusion and normal occlusion. Angle Orthod. 1952;22:142–145.

Andrews LF. The six keys to normal occlusion. Am J Orthod. 1972;62:296–309.

Sangcharearn Y, Ho C. Maxillary incisor angulation and its effect on molar relationships. Angle Orthod. 2007;77(2).

Andria LM, Reagin KB, Leite LP, King LB. Statistical evaluation of possible factors affecting the sagittal position of the first permanent molar in maxilla. Angle Orthod. 2004;74:220–225.

Salzmann JA. Orthodontics in Daily Practice. 1974.

Mahto RK, Kharbanda OP, Duggal R, Sardana HKA. Comparison of cephalometric measurements obtained from two computerized cephalometric software with manual tracings. J Indian Orthod Soc. 2016;50:162–170.

Ruiz-Mora GA, Arriola-Guillen LE, Flores-Mir C. Maxillary First Molar Vertical and Horizontal Position Based on Sagittal and Vertical Facial Skeletal Growth Patterns on CBCT-Synthesized Cephalograms of Adult Patients with Different Dentofacial Discrepancies but With Normal Overbite. OHDM-Vol.13 – No.4 – December; 2014.

Nanda R, Nanda RS. Cephalometric study of the dentofacial complex of North Indians. Angle Orthod. 1969;39:22–28.

Valiathan M, Valiathan A, Ravinder V. Jarabak cephalometric analysis reborn. J Indian Orthod Soc. 2001;34:66–76.

Agrawal D. Cephalometric analysis for diagnosis and treatment of orthodontic patients. J Oral Health Community Dent. 2013;7:75–79.