Condylar height on panoramic radiographs. A methodologic study with a clinical application.

• The aim of this study was to develop and apply a reliable method of measuring the effects of condylar lesions quantitatively on panoramic radiographs. Three different types of machines were tested. Two dry skulls were exposed in six positions in each machine, and the relative size of the condyle in relation to ramus height was calculated. The results showed good validity for the reference points used. The head position did not contribute to the variation in the measurements, but the type of panoramic machine had some influence. It was concluded that the method may be applied when calculating condylar ratios, provided that the same panoramic machine is used. The relative height of the condyle in relation to ramus height was measured bilaterally in three groups of children, with either normal or postnormal occlusion or with juvenile chronic arthritis (JCA), to detect possible asymmetries and define differences in the relative condylar height. The JCA group had a significantly shorter relative condylar height, and asymmetries were commoner than in the other two groups.

Ämnesord

MEDICIN OCH HÄLSOVETENSKAP  -- Klinisk medicin -- Odontologi (hsv//swe)

MEDICAL AND HEALTH SCIENCES  -- Clinical Medicine -- Dentistry (hsv//eng)

Nyckelord

Adolescent

Adult

Arthritis

Juvenile Rheumatoid

pathology

radiography

Child

Facial Asymmetry

Female

Humans

Male

Malocclusion

Angle Class II

pathology

radiography

Mandibular Condyle

anatomy & histology

radiography

Radiography

Panoramic

methods

statistics & numerical data

Reference Standards

Reproducibility of Results

Temporomandibular Joint Disorders

pathology

radiography

Publikations- och innehållstyp

ref (ämneskategori)

art (ämneskategori)