eISSN: 1896-9151
ISSN: 1734-1922
Archives of Medical Science
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vol. 9

Clinical research
Skeletal pattern in subjects with temporomandibular joint disorders

Oana Cristina Almăşan
Mihaela Băciuţ
Horea Artimoniu Almăşan
Simion Bran
Liana Lascu
Mihaela Iancu
Grigore Băciuţ

Arch Med Sci 2013; 9, 1: 118-126
Online publish date: 2013/02/18
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Introduction: To establish the skeletal pattern in subjects with malocclusions and temporomandibular disorders (TMD); to assess the relationship between craniofacial skeletal structures and TMD in subjects with malocclusions.

Material and methods: Sixty-four subjects with malocclusions, over 18 years of age, were included in the study. Temporomandibular disorders were clinically assessed according to the Helkimo Anamnestic Index. Subjects underwent a lateral cephalogram. Subjects were grouped according to the sagittal skeletal pattern (ANB angle) into class I, II and III. Parametric Student tests with equal or unequal variations were used (variations were previously tested with Levene test).

Results: Twenty-four patients with TMD (experimental sample); 40 patients without TMD (control group); interincisal angle was higher in class I and II (p < 0.05) experimental subjects; overjet was larger in experimental subjects; midline shift and Wits appraisal were broader in the experimental group in all three classes. In class III subjects, the SNB angle was higher in the experimental group (p = 0.01). Joint noises followed by reduced mandible mobility, muscular pain and temporomandibular joint (TMJ) pain were the most frequent symptoms in subjects with TMD and malocclusions.

Conclusions: Temporomandibular joint status is an important factor to consider when planning orthodontic treatment in patients with severe malocclusions; midline shift, large overjet and deep overbite have been associated with signs and symptoms of TMD.

temporomandibular joint disorder, malocclusion, lateral cephalometry

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