[Radiological interpretation of bone regeneration after cystectomy of odontogenic cysts].

38 patients who had undergone surgical intervention (Partsch II) for odontogenic cysts were examined radiographically as well as clinically. The extent of bone regeneration was estimated according to age, sex, location of the cyst in the jaw, cyst size, length of time elapsed after operation and function. To facilitate the interpretation of the results obtained, the patients were subdivided into five age groups. Bone regeneration was most frequent up to the age of 20 (85.7%). It occurred more often in women (in 11 of 16 patients = 68.75%) than in men (in 14 of 22 patients = 63.6%). Bone healing was most favourable in the anterior region of the mandible less, favourable in the posterior region of the maxillae and least favourable in the anterior region of the upper jaw. With increasing size of the cyst, the regenerative power of the bone decreased. An increase in regeneration was observed up to 3 years after surgical intervention.