Godunova I.V.1, Shchipskiy A.V.1, Serova N.S.2

Purpose. Assessment of duration of the jaw’s bone tissue recovery after cystotomy based on radiological methods of examination. Analysis of age influence, cyst localization, pathological cyst type and techniques of cystotomy on the timing of bone tissue recovery is presented.
1 - A.I. Evdokimov Moscow State University of Medicine and Dentistry.
2 - I.M. Sechenov First Moscow State Medical University. Moscow, Russia.

Materials and methods. Assessment of the treatment results and rehabilitation of 63 patients with 65 cysts of the jaws: 37 radicular cysts (57%), 24 odontogenic cyst (37%), 4 keratocyst (6%). Cysts were found more frequently in men (n=42; 65%), in patients of middle and adult ages (n=49; 75%), the distribution in the region of upper (n=29; 45%) and lower (n=36; 55%) jaws is equal. Radiation methods were used at the stage of diagnosis: orthopantomography (OPTG) (n=65; 32%), computed tomography (n=31; 15%), radiography (n=14; 7%), intraoral contact radiography (n=12; 6%) and electroodontodiagnosis of the teeth (n=18; 9%) and pathological studies (n=65; 32%). Control study at the stage of rehabilitation was carried out using the physical examination, regeneration – with the help of radiological methods (n=149), the main of which were OPTG (n=81; 50%) and CT (n=65; 40%). The approximate frequency of studies was 6 months, the depth of research – up to 5 years. Surgical treatment was con-ducted in the form of cystotomy. With the aim of identifying possible factors affecting the speed and quality of recovery, all patients were divided into groups based on age (adolescence, adulthood, middle and old age), pathological sign (radicular cyst, odontogenic cyst, keratocyst), localization (upper jaw, lower jaw), method of cystotomy (palatal, vestibular, cystotomy in the lower jaw).

Results. The process of formation of the primary regenerate at the time of visual liquidation of cyst cavity ("clinical recovery") has been completed or was close to it (2/3 of the cavity volume) only in 58% of cases. Primary radiographic signs of architectonics recovery in primary regenerate started to determine in these period (≈ 6-7 months after surgery), signs of formation of compact bone plates were absent. The primary formation of the regenerate was completed through 2 years after cystotomy. The appearance of typical architectonics in the formed regenerate was evident in 63% of cases. Along with this the second sign of remodeling as formed in the region of cystostomy and resorbed anatomical structures of cortical bone were still absent. The formation of trabecular pattern was mostly completed in 3 years after cystotomy. The formation of cortical structures showed slower dynamics.

Conclusion. The process of formation and remodeling of the regenerate was fully completed in approximately 5 years after cystotomy. According to clinical and radiological survey found similar dynamics of bone regeneration regardless of various factors


Keywords: the cyst of the jaw, the regeneration of bone tissue, cystotomy.


Corresponding author: Godunova I.V. Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript

For citation: Godunova I.V., Shchipskiy A.V., Serova N.S. The role of radiological methods in the evalution of bone tissue regeneration after cystotomy in patients with large cysts of the jaws. REJR. 2016; 6 (2):22-28. DOI:10.21569/2222-7415-2016-6-2-22-28.

Received: 15.03.2016 Accepted: 29.03.2016