Condylar Hyperplasia of the Temporomandibular Joint

Unilateral Condylar Hyperplasia: Two Case Reports and a Literature Review

“…CH occurs with an equal rate in males and females as well as unilateral and bilateral. 11 - 13 CH represents a disorder where the growth of the condyle continues beyond the normal growth period. 14 Previous literature has shown that CH often presents in the second or third decades of life and more commonly affects women than men.…”

“…However, they do not provide any valuable information regarding the burnout or staging of condylar hyperactivity. 7 , 9 , 11 , 16 Nuclear imaging, which includes scintigraphy (technetium -99m ), single-photon emission computed tomography, and positron emission tomography, provides detailed information on the condylar activity and cessation of growth, thus assisting the formulation of an appropriate treatment plan. 8 - 10 , 16 , 17 …”

Using 3D Medical Modeling to Evaluate the Accuracy of Single-Photon Emission Computed Tomography (SPECT) Bone Scintigraphy in Diagnosing Condylar Hyperplasia

“…UCH can adversely affect the size and morphology of the mandible, alter occlusion, and indirectly affect the maxilla, with the result being the development or worsening of dentofacial deformities. 1 UCH is characterized by the overgrowth of 1 condyle compared with the other. While the etiology is unknown, possible causes include tumors, trauma, infection, heredity, and abnormalities in condylar loading and hormone and growth factor levels.…”

“…While the etiology is unknown, possible causes include tumors, trauma, infection, heredity, and abnormalities in condylar loading and hormone and growth factor levels. 1 This asymmetry mostly occurs in childhood or adolescence, but it can also occur in adults after bone growth has stopped. 2,3 The treatment plan for condylar hyperplasia depends on the growth activity of the condyle, so it is critical to choose an appropriate diagnostic method.…”

“…The currently accepted diagnostic methods for UCH are serial radiographs, dental models, and clinical evaluations, preferably at an interval of 6 to 12 months. 1,4 There are also researchers who use overlapping clinical photos to determine whether the condyle has actively grown over a period of time. 5 However, these methods have certain limitations.…”