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Association between third molar agenesis and craniofacial structure development.
Am J Orthod Dentofacial Orthop. 2015 Nov; 148(5):799-804.AJ

Abstract

INTRODUCTION

The aim of this investigation was to study the relationship between third molar agenesis-including the number of ageneses-and craniofacial structure growth.

METHODS

We reviewed 305 clinical histories of patients treated at the Orthodontics Unit of the Faculty of Medicine and Dentistry at the University of Valencia in Spain. This included radiographic records of optimal quality. Of these, 40 patients who had agenesis of at least 1 third molar were included in the study group. A control group was formed with another 40 patients with all 4 third molars present. For both groups, a further criterion for inclusion was cone-beam computed tomography records. The cephalometric analysis was performed with NemoCeph 3D software (version 11.3.1.38; Nemotec, Madrid, Spain).

RESULTS

The only significant differences between the 2 groups were in the total gonial angle and the upper gonial angle (P ≤0.05), both of which were smaller in the study group.

CONCLUSIONS

Third molar agenesis is associated with a reduction in Jarabak's gonial angle and upper gonial angle, characteristic of patients with a more horizontal or brachyfacial skeletal pattern. No significant differences were found in other measurements.

Authors+Show Affiliations

Postgraduate student, Stomatology Department, Faculty of Medicine and Dentistry, University of Valencia, Valencia, Spain.Postgraduate student, Stomatology Department, Faculty of Medicine and Dentistry, University of Valencia, Valencia, Spain.Assistant lecturer, Stomatology Department, Faculty of Medicine and Dentistry, University of Valencia, Valencia, Spain.Lecturer, Stomatology Department, Faculty of Medicine and Dentistry, University of Valencia, Valencia, Spain.Associate lecturer, Stomatology Department, Faculty of Medicine and Dentistry, University of Valencia, Valencia, Spain. Electronic address: bellot.arcis@gmail.com.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

26522040

Citation

Ramiro-Verdugo, Jara, et al. "Association Between Third Molar Agenesis and Craniofacial Structure Development." American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics, vol. 148, no. 5, 2015, pp. 799-804.
Ramiro-Verdugo J, De Vicente-Corominas E, Montiel-Company JM, et al. Association between third molar agenesis and craniofacial structure development. Am J Orthod Dentofacial Orthop. 2015;148(5):799-804.
Ramiro-Verdugo, J., De Vicente-Corominas, E., Montiel-Company, J. M., Gandía-Franco, J. L., & Bellot-Arcís, C. (2015). Association between third molar agenesis and craniofacial structure development. American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics, 148(5), 799-804. https://doi.org/10.1016/j.ajodo.2015.05.025
Ramiro-Verdugo J, et al. Association Between Third Molar Agenesis and Craniofacial Structure Development. Am J Orthod Dentofacial Orthop. 2015;148(5):799-804. PubMed PMID: 26522040.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Association between third molar agenesis and craniofacial structure development. AU - Ramiro-Verdugo,Jara, AU - De Vicente-Corominas,Elena, AU - Montiel-Company,José María, AU - Gandía-Franco,José Luís, AU - Bellot-Arcís,Carlos, PY - 2014/11/01/received PY - 2015/05/01/revised PY - 2015/05/01/accepted PY - 2015/11/3/entrez PY - 2015/11/3/pubmed PY - 2016/2/18/medline SP - 799 EP - 804 JF - American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics JO - Am J Orthod Dentofacial Orthop VL - 148 IS - 5 N2 - INTRODUCTION: The aim of this investigation was to study the relationship between third molar agenesis-including the number of ageneses-and craniofacial structure growth. METHODS: We reviewed 305 clinical histories of patients treated at the Orthodontics Unit of the Faculty of Medicine and Dentistry at the University of Valencia in Spain. This included radiographic records of optimal quality. Of these, 40 patients who had agenesis of at least 1 third molar were included in the study group. A control group was formed with another 40 patients with all 4 third molars present. For both groups, a further criterion for inclusion was cone-beam computed tomography records. The cephalometric analysis was performed with NemoCeph 3D software (version 11.3.1.38; Nemotec, Madrid, Spain). RESULTS: The only significant differences between the 2 groups were in the total gonial angle and the upper gonial angle (P ≤0.05), both of which were smaller in the study group. CONCLUSIONS: Third molar agenesis is associated with a reduction in Jarabak's gonial angle and upper gonial angle, characteristic of patients with a more horizontal or brachyfacial skeletal pattern. No significant differences were found in other measurements. SN - 1097-6752 UR - https://www.unboundmedicine.com/medline/citation/26522040/Association_between_third_molar_agenesis_and_craniofacial_structure_development_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0889-5406(15)00890-2 DB - PRIME DP - Unbound Medicine ER -