Download PDF
CC BY-NC-ND 4.0 · Eur J Dent 2014; 08(02): 178-183
DOI: 10.4103/1305-7456.130595
Original Article
Dental Investigation Society

Effects of early unilateral mandibular first molar extraction on condylar and ramal vertical asymmetry

Koray Halicioglu
1   Department of Orthodontics, Faculty of Dentistry, Abant Izzet Baysal University, Bolu, Turkiye
,
Mevlut Celikoglu
2   Department of Orthodontics, Faculty of Dentistry, Karadeniz Technical University, Trabzon, Turkiye
,
Suleyman K. Buyuk
3   Department of Orthodontics, Faculty of Dentistry, Erciyes University, Kayseri, Turkiye
,
Ahmet E. Sekerci
4   Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Erciyes University, Kayseri, Turkiye
,
Celal Candirli
5   Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Karadeniz Technical University, Trabzon, Turkiye
› Author Affiliations
Further Information

Publication History

Publication Date:
24 September 2019 (online)

  PDF Download Permissions and Reprints

ABSTRACT

Objective: The objective of the following study is to investigate the mandibular vertical asymmetry in a group of patients with early unilateral mandibular first molar extractions. Materials and Methods: Mandibular asymmetry index measurements (condylar, ramal and condylar-plus-ramal) were performed on the panoramic radiographs of a study group including 51 patients (mean age: 18.60 ± 1.11 years) and a control group of 51 patients (mean age: 18.53 ± 1.29 years). Group I included patients with a unilateral mandibular first molar extracted before the age of 12 years. Group II included patients with no extractions and had excellent Class I relationships, no missing teeth and slight or moderate anterior crowding. A paired t-test was used to determine possible statistically significant differences between the sides for the measurements. Student's t-test was used for the comparison of asymmetry index values between the groups and genders. Results: No group showed statistically significant sex-or side-specific differences for posterior vertical height measurements. Condylar asymmetry index and ramal asymmetry index measurements were not statistically different between the groups, while condylar-plus-ramal asymmetry index (CRAI) measurements were statistically different between the groups (P = 0.019). Conclusions: A slight difference for CRAI value was found in patients with early unilateral mandibular first molar extractions.

Key words:

Condylar asymmetry - first molar extraction - ramal asymmetry - vertical asymmetry
 

  • REFERENCES

  • 1 Bishara SE, Cummins DM, Jakobsen JR, Zaher AR. Dentofacial and soft tissue changes in Class II, division 1 cases treated with and without extractions. Am J Orthod Dentofacial Orthop 1995; 107: 28-37
    CrossrefPubMedGoogle Scholar
  • 2 Stedman G. Stedman's Medical Dictionary. Baltimore: The Williams and Wilkins Company; 1966
    Google Scholar
  • 3 Erickson GE, Waite DE. Mandibular asymmetry. J Am Dent Assoc 1974; 89: 1369-73
    CrossrefPubMedGoogle Scholar
  • 4 Andrews LF. The six keys to normal occlusion. Am J Orthod 1972; 62: 296-309
    CrossrefPubMedGoogle Scholar
  • 5 Todd JE, Dodd T. Children's Dental Health in the United Kingdom. London: Office of Population Censuses and Surveys; 1983
    Google Scholar
  • 6 Albadri S, Zaitoun H, McDonnell ST, Davidson LE. Extraction of first permanent molar teeth: Results from three dental hospitals. Br Dent J 2007; 203: E14
    CrossrefPubMedGoogle Scholar
  • 7 Lin YT, Lin WH, Lin YT. Immediate and six-month space changes after premature loss of a primary maxillary first molar. J Am Dent Assoc 2007; 138: 362-8
    CrossrefPubMedGoogle Scholar
  • 8 Lundstrom A. Some asymmetries of the dental arches, jaws, and skull, and their etiological significance. Am J Orthod Dentofacial Orthop 1961; 47: 81-106
    CrossrefGoogle Scholar
  • 9 Halicioglu K, Toptas O, Akkas I, Celikoglu M. Permanent first molar extraction in adolescents and young adults and its effect on the development of third molar. Clin Oral Investig. 2013 [Epub ahead of print]
    PubMedGoogle Scholar
  • 10 Janson G, Carvalho PE, Cançado RH, de Freitas MR, Henriques JF. Cephalometric evaluation of symmetric and asymmetric extraction treatment for patients with Class II subdivision malocclusions. Am J Orthod Dentofacial Orthop 2007; 132: 28-35
    CrossrefPubMedGoogle Scholar
  • 11 Rebellato J. Asymmetric extractions used in the treatment of patients with asymmetries. Semin Orthod 1998; 4: 180-8
    CrossrefPubMedGoogle Scholar
  • 12 Pirttiniemi P, Kantomaa T. Relation of glenoid fossa morphology to mandibulofacial asymmetry, studied in dry human Lapp skulls. Acta Odontol Scand 1992; 50: 235-43
    CrossrefPubMedGoogle Scholar
  • 13 Habets LL, Bezuur JN, Naeiji M, Hansson TL. The orthopantomogram, an aid in diagnosis of temporomandibular joint problems. II. The vertical symmetry. J Oral Rehabil 1988; 15: 465-71
    CrossrefPubMedGoogle Scholar
  • 14 Kiki A, Kiliç N, Oktay H. Condylar asymmetry in bilateral posterior crossbite patients. Angle Orthod 2007; 77: 77-81
    CrossrefPubMedGoogle Scholar
  • 15 Uysal T, Sisman Y, Kurt G, Ramoglu SI. Condylar and ramal vertical asymmetry in unilateral and bilateral posterior crossbite patients and a normal occlusion sample. Am J Orthod Dentofacial Orthop 2009; 136: 37-43
    CrossrefPubMedGoogle Scholar
  • 16 Kilic N, Kiki A, Oktay H. Condylar asymmetry in unilateral posterior crossbite patients. Am J Orthod Dentofacial Orthop 2008; 133: 382-7
    CrossrefPubMedGoogle Scholar
  • 17 Miller VJ, Smidt A. Condylar asymmetry and age in patients with an Angle's Class II division 2 malocclusion. J Oral Rehabil 1996; 23: 712-5
    PubMedGoogle Scholar
  • 18 Miller VJ, Bodner L. Condylar asymmetry measurements in patients with an Angle's Class III malocclusion. J Oral Rehabil 1997; 24: 247-9
    CrossrefPubMedGoogle Scholar
  • 19 Sağlam AM. The condylar asymmetry measurements in different skeletal patterns. J Oral Rehabil 2003; 30: 738-42
    CrossrefPubMedGoogle Scholar
  • 20 Kurt G, Bayram M, Uysal T, Ozer M. Mandibular asymmetry in cleft lip and palate patients. Eur J Orthod 2010; 32: 19-23
    CrossrefPubMedGoogle Scholar
  • 21 Vig PS, Hewitt AB. Asymmetry of the human facial skeleton. Angle Orthod 1975; 45: 125-9
    PubMedGoogle Scholar
  • 22 Farkas LG, Cheung G. Facial asymmetry in healthy North American Caucasians. An anthropometrical study. Angle Orthod 1981; 51: 70-7
    PubMedGoogle Scholar
  • 23 Vazquez F, Grostic JD, Fonder AC, DeBoer KF. Eccentricity of the skull. Correlation with dental malocclusion. Angle Orthod 1982; 52: 144-58
    PubMedGoogle Scholar
  • 24 Kusayama M, Motohashi N, Kuroda T. Relationship between transverse dental anomalies and skeletal asymmetry. Am J Orthod Dentofacial Orthop 2003; 123: 329-37
    CrossrefPubMedGoogle Scholar
  • 25 Ramirez-Yañez GO, Stewart A, Franken E, Campos K. Prevalence of mandibular asymmetries in growing patients. Eur J Orthod 2011; 33: 236-42
    CrossrefPubMedGoogle Scholar
  • 26 Cağlaroğlu M, Kilic N, Erdem A. Effects of early unilateral first molar extraction on skeletal asymmetry. Am J Orthod Dentofacial Orthop 2008; 134: 270-5
    CrossrefPubMedGoogle Scholar
  • 27 Halicioglu K, Celikoglu M, Caglaroglu M, Buyuk SK, Akkas I, Sekerci AE. Effects of early bilateral mandibular first molar extraction on condylar and ramal vertical asymmetry. Clin Oral Investig 2013; 17: 1557-61
    CrossrefPubMedGoogle Scholar
  • 28 Azevedo AR, Janson G, Henriques JF, Freitas MR. Evaluation of asymmetries between subjects with Class II subdivision and apparent facial asymmetry and those with normal occlusion. Am J Orthod Dentofacial Orthop 2006; 129: 376-83
    CrossrefPubMedGoogle Scholar
  • 29 Dahlberg G. Statistical Methods for Medical and Biological Students. New York: Interscience Publications; 1940
    Google Scholar
  • 30 Kambylafkas P, Murdock E, Gilda E, Tallents RH, Kyrkanides S. Validity of panoramic radiographs for measuring mandibular asymmetry. Angle Orthod 2006; 76: 388-93
    PubMedGoogle Scholar
  • 31 Van Elslande DC, Russett SJ, Major PW, Flores-Mir C. Mandibular asymmetry diagnosis with panoramic imaging. Am J Orthod Dentofacial Orthop 2008; 134: 183-92
    CrossrefPubMedGoogle Scholar
  • 32 Sezgin OS, Celenk P, Arici S. Mandibular asymmetry in different occlusion patterns. Angle Orthod 2007; 77: 803-7
    CrossrefPubMedGoogle Scholar
  • 33 Sanders DA, Rigali PH, Neace WP, Uribe F, Nanda R. Skeletal and dental asymmetries in Class II subdivision malocclusions using cone-beam computed tomography. Am J Orthod Dentofacial Orthop 2010; 138: 542.e1-20
    Google Scholar
  • 34 Langland OE, Sippy FH. Anatomic structures as visualized on the orthopantomogram. Oral Surg Oral Med Oral Pathol 1968; 26: 475-84
    CrossrefPubMedGoogle Scholar
  • 35 Lund TM, Manson-Hing LR. A study of the focal troughs of three panoramic dental x-ray machines. Part I. The area of sharpness. Oral Surg Oral Med Oral Pathol 1975; 39: 318-28
    PubMedGoogle Scholar
  • 36 Larheim TA, Svanaes DB. Reproducibility of rotational panoramic radiography: Mandibular linear dimensions and angles. Am J Orthod Dentofacial Orthop 1986; 90: 45-51
    CrossrefPubMedGoogle Scholar
  • 37 Habets LL, Bezuur JN, van Ooij CP, Hansson TL. The orthopantomogram, an aid in diagnosis of temporomandibular joint problems. I. The factor of vertical magnification. J Oral Rehabil 1987; 14: 475-80
    CrossrefPubMedGoogle Scholar
  • 38 Wang MQ, He JJ, Chen CS, Widmalm SE. A preliminary anatomical study on the association of condylar and occlusal asymmetry. Cranio 2011; 29: 111-6
    PubMedGoogle Scholar
  • 39 Alavi DG, BeGole EA, Schneider BJ. Facial and dental arch asymmetries in Class II subdivision malocclusion. Am J Orthod Dentofacial Orthop 1988; 93: 38-46
    CrossrefPubMedGoogle Scholar
  • 40 Pirttiniemi P, Kantomaa T, Lahtela P. Relationship between craniofacial and condyle path asymmetry in unilateral cross-bite patients. Eur J Orthod 1990; 12: 408-13
    CrossrefPubMedGoogle Scholar
  • 41 O'Byrn BL, Sadowsky C, Schneider B, BeGole EA. An evaluation of mandibular asymmetry in adults with unilateral posterior crossbite. Am J Orthod Dentofacial Orthop 1995; 107: 394-400
    CrossrefPubMedGoogle Scholar
  • 42 Letzer GM, Kronman JH. A posteroanterior cephalometric evaluation of craniofacial asymmetry. Angle Orthod 1967; 37: 205-11
    PubMedGoogle Scholar
  • 43 Yale SH. Radiographic evaluation of the temporomandibular joint. J Am Dent Assoc 1969; 79: 102-7
    CrossrefPubMedGoogle Scholar
  • 44 Inui M, Fushima K, Sato S. Facial asymmetry in temporomandibular joint disorders. J Oral Rehabil 1999; 26: 402-6
    CrossrefPubMedGoogle Scholar