Lower Third Molar Space and Angulation in Individuals with Lower Anterior Crowding

Merin Cherian; M. S. Ravi

doi:10.1055/s-0040-1708654

Journal of Health and Allied Sciences NU, Inhaltsverzeichnis

CC BY-NC-ND 4.0 · Journal of Health and Allied Sciences NU 2016; 06(03): 10-15
DOI: 10.1055/s-0040-1708654

Original Article

Lower Third Molar Space and Angulation in Individuals with Lower Anterior Crowding

Authors

Merin Cherian

¹BDS, Post Graduate, Dept. of Orthodontics, A.B. Shetty Memorial Institute of Dental Sciences, Nitte University, Mangalore
M. S. Ravi

²MDS, Professor and Head, Dept. of Orthodontics, A.B. Shetty Memorial Institute of Dental Sciences, Nitte University, Mangalore

Abstract

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Abstract

Background: The role and involvement of mandibular third molars on mandibular incisor crowding, post retention, in orthodontically treated patients has long been debated. The correlations between lower anterior crowding and lower third molar angulation and space are not completely understood.

Aim: To assess the lower third molar space and its angulation in individuals with lower anterior crowding and to compare it with that of individuals without lower anterior crowding.

Settings and design: Hospital based Prospective, cross-sectional study on randomly selected individuals.

Materials and Methods: Lower third molar space and angulations were measured and compared using orthopantomograph tracings of 80 subjects in the age group of 20-30 years with skeletal Class I malocclusion individuals without lower anterior crowding(Group A) and individuals with lower anterior crowding (Group B).

Statistical Analysis: Both the space and angulations of lower third molar were correlated with the lower anterior crowding using Pearson Correlation Coefficient.

Results: Significant differences were found in third molar space between the study group and the control group. But there was no significant difference in third molar angulation between the groups.

Conclusion: the lower anterior crowding has a significant influence on third molar space but did not have any effect on third molar angulation.

Keywords

Third molar space - Third molar angulation - Lower anterior crowding - Orthopantomograph

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Referenzen

References
1 Yuh Hasegawa, Kazuto Terada, Ikuo Kageyama, Takashi Tsuchimochi, Fujiro Ishikawa, Sen Nakahara. Influence of third molar space on angulation and dental arch crowding. Odontology 2012; DOI 10.1007/s10266-012-0065-2.
2 Junaid Lakhani M, Wahab Kadri, Hassan Mehdi, Houshang Sukhia, Asma Bano, Sania Yaqoob. Anterior arch crowding- a possible predictor for mandibular third molar impaction. J Ayub Med Coll Abbotttabad 2011;23(1)63-65.
3 Abu Alhaija E.S.J, AlBhairan H.M and Al Khateeb S.N. Mandibular third molar space in different anteroposterior skeletal patterns. EJO 2011;Vol.33, 570-576.
4 Chung How Kau et al. Evaluation of CBCT Digital Models and Traditional Models Using the Little's Index. Angle Orthod 2010;80:435-439.
5 Sidlauskas Antanas, Trakiniene Giedre.Effect of lower third molars on the dental arch crowding. Baltic dental and maxillofacial journal 2006;Vol.8, No3:80-4.
6 Faraj Behbehani, Jon Artun and Lukman Thalib. Prediction of mandibular third molar impaction in adolescent orthodontic patients. Am J Orthod Dentofac Orthop 2006;130:47-55.
7 Jon Artun, Lukman Thlib, Robert M Little. Third molar angulations during and after treatment of adolescent orthodontic patients. Am J Orthod Dentofac Orthop 2006;130:47-55.
8 Iwona Niedzielska.Third molar influence on dental arch crowding. EJO 2005; 27, 518-523.
9 Sumitra, Arundhati P Tandur.Third molars and late mandibular incisor crowding. JIOS 2005;38,100-111.
10 Sandhu S, Kaur T. Radiographic evaluation of the status of third molars in the Asian-Indian students. J Oral Maxillofacial 2005;63(5):640-5.
11 Jon Artun, Lukman Thalib, Robert M Little. Third molar angulations during and after treatment of adolescent orthodontic patients. Eur J Orthod 2005;27:590-596.
12 Tae – Woo Kim, Jon Artun, Faraj Behbehani, and Fflavia Artese. Prevalence of third molar impaction in orthodontic patients treated nonextraction and with extraction of 4 premolars. Am J Orthod Dentofac Orthop 2003:123:138-45.
13 Faiez Hattab and Elham Abu . Radiographic evaluation of mandibular third molar eruption space. Oral Surg Oral Med Oral Path Oral Radiol Endod 1999:88:285-91
14 Erdem D, Ozdiler E, Toygar Memikoglu U and Baspinar E. third molar impaction in extraction cases treated witth the Begg technique. Eur J Orthod 1998;20:263-270.
15 Friesfeld M, Drescher D, Kobe D, Schiller H. assessment of the space for the lower wisdom teeth. J Orofac Orthop 1998;59(1):17-28.
16 Ganss C, Hochban W, Kielbassa AM, Umstadt HE. Prognosis of third molar eruption. Oral Surg Oral Med Oral Pathol 1993;76:688-93.
17 Margaret Richardson. Lower arch crowding in the young adult. Am J Orthod Dentofac Orthop 1992
18 Staggers JA, Germane N, Fortson WM. A comparison of effects of first premolar extractions on the third molar angulations. Angle Orthod 1992;62(2):135-8.
19 Thomas E Southard, Karin A. Southard, Larry W.Weeda. Mesial force from unerupted third molar. Am J Orthod Dentofac Orthop 1991;Vol99, No:3
20 Sewerin I, Von Wowern. Radiographic four year follow up study of asymptomatic mandibular third molars in young adults. Int Dent J 199;40:243.
21 Venta I, Murtomaa H, Turtola L, Meurman J. Assessing the eruption of lower third molars on the basis of radiographic features. British J of Oral and Maxillofacial Surgery 1991;29:259-262
22 Jonas Capelli Jr. Mandibular growth and third molar impaction in extraction cases. Angle Orthod 1991;61:3:223-9.
23 Amin G Ades, Donald R Joondeph, Robert M Little, Michael K Chapko.A long term study of the relationship of the third molars to changes in the mandibular dental arch. Am J Orthod Dentofac Orthop 1990;97,323-35.
24 Carl-Magnus Forsberg. Tooth size, spacing, and crowding in relation to eruption or impaction of third molars. Am J Orthod Dentofac Orthop 1988;94:57-62.
25 Rainer Meithke, Angelika Behm.Correlations between lower incisor crowding and lower incisor position and lateral craniofacial morphology. Am J Orthod Dentofac Orthop 1988;94:231-9.
26 Margaret E Richardson. Late lower arch crowding in relation to primary crowding. Angle Orthod 1982. Vol 52. No.4.
27 Olive RJ, Basford KE. Transverse dentoskeletal relationships and third molar impaction. Angle Orthod 1981;51(1):41-47.
28 Mac Gregor AJ. The radiological assessment of ectopic lower third molars. Ann Roy Coll Surg 1979;61:105-109.
29 Richardson M. Pre eruptive movements of mandibular third molar. Angle Orthod 1978;48(3):187-193.
30 Silling G. Development and eruption of mandibular third molar and its response to orthodontic therapy. Angle Orthod 1973; 43:271-8.