Abstract

Background: There is a relationship between facial deformity and angulation of impaction which is studied by many authors.
Aims and Objectives: To assess relation between the type of mandibular third molar impaction and skeletal deformity.
Materials and Methods: A cross sectional study was carried on 152 orthopantomograms (OPG) and lateral cephalometric of patients of 18 years and above (106 males and 46 females) and the type of lower third molar impactions and facial deformity was recorded.
Results: 106 (69.7%) were males and 46 (31.3%) were females. The commonest impaction angulation was mesio-angular impaction which was found in 98 teeth out of which 65 belonged to males (66.3%) and 33 belonged to females (33.7%). The majority of the impacted teeth were found in patients who had skeletal class I facial profile (78.2%) out of which, most of them (44%) had mesio-angular impaction while least had inverted impaction (1.6%).
Conclusion: Mandibular third molar impaction is significantly associated with anteroposterior skeletal molar relationship.

References

  • Al-Jasser NM. Cephalometric evaluation of craniofacial variations in normal Saudi population according to Steiner analysis. Saudi Med J. 2000; 21:746–750.
  • Anuonye, J. C., CE, C., Olukayode, J., & Suleiman, A. (2016). Nutrient Composition, Amylose Content and Pasting Characteristics of Some Elite Accessions of Nerica Rice. Journal of Food Technology Research, 3(1), 36-47.
  • Bjork A, Jensen E, Palling M. Mandibular growth and third molar impaction. Acta Odont Scand 1956;14:231–271.
  • Breik O, Grubor D. The incidence of mandibular third molar impactions in different skeletal face types. Aust Dent J. 2008; 53:320–324.
  • Eshghpour M, Nezadi A, Moradi A, Shamsabadi MR, Razaer NM, Nejat A. Pattern of mandibular third molar impaction: A cross‑sectional study in northeast of Iran. Nigerian J Clin Pract. 2014; 17(6): 673-677.
  • Forsberg CM. Tooth size, spacing, and crowding in relation to eruption or impaction of third molars. Am J Orthod Dentofacial Orthop 1988;94:57–62.
  • Hamdan AM, Rock WP. Cephalometric norms in an Arabic population. J Orthod. 2001; 28:297–300.
  • Hassan AH. Mandibular cephalometric characteristics of a Saudi sample of patients having impacted third molars. Saudi Dent J. 2011; 23(2): 73-80.
  • Hassan AH. Pattern of third molar impaction in a Saudi population. Clin Cosm Invest. 2010; 2: 109.
  • Hatem MO, Bughaigis I, Taher EM. Pattern of third molar impaction in Libyan population: a retrospective radiographic study. Saudi J Dent Res. 2015; 41.
  • Miloro M. Peterson’s Principles of Maxillofacial Surgery. PMPH-USA. 2004. Vol. 1.
  • Obeichina AE, Arotiba JT, Fasola AO. Third molar impaction : evaluation of the symptoms and pattern of impaction of mandibular third molar teeth in Nigerians. Odonto Stomatologie Tropicale. 2001; 93: 22-25.
  • Olasoji O, Odusanya S. Comparative study of third molar impaction in rural and urban areas of South-Western Nigeria. Odonto Stomat Tropicale. 2000; 29(90): 25-28.
  • Padhye MN, Dabir AV, Girothra CS, Pandhi VH. Pattern of mandibular third molar impaction in the Indian population: a retrospective clinico-radiographic survey. Oral Surg Oral Med Oral Pathol Oral Radiol. 2013; 116(3): e161-e166.
  • Quek SL, Tay CK, Tay KH, Toh SL, Lim KC. Pattern of third molar impaction in Singapore Chinese population: a retrospective radiographic survey. 2003; 32(5): 548-552.
  • Richardson ME. The etiology and prediction of mandibular third molar impaction. Angle Orthod. 1977; 47:165–172.
  • Sapkota MR, Bhatta S, Shrestha S, Shrestha RM. Position of impacted mandibular third molar in different skeletal facial types. Ortho J Nepal. 2017; 7(2): 15-19.
  • Scherstén E, Lysell L, Rohlin M. Prevalence of impacted third molars in dental students. Swed Dent J. 1989; 13:7-13.
  • Shalhoub SY, Sarhan OA, Shaikh HS. Adult cephalometric norms for Saudi Arabians with a comparison of values for Saudi and North American Caucasians. Br J Orthod. 1987; 14:273–279.
  • Sugiki Y, Kobayashi Y, Uozo M, Endo T. Association between skeletal morphology and agenesis of all four third molars in Japanese orthodontic patients. Odontol. 2018; 106: 282-288.

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