ABSTRACT
Apicotomy of 105 teeth of 78 patients with chronic periodontitis has been performed. The periapical defect were filled with two kinds of osteoplastic matter: the first group was treated with demineralised bone matrix of newborn pigs (DBMNP), the second group with artificial hydroxyapatite, while both matters were enriched with platelet rich plazma (PRP).As a third, control group, cases. The defects of which were not filled with osteoplastic matter, were investigated. The dynamics of the regeneration of bone defects was studied based on the data of densitometric investigation. The results of objective observations have revealed high efficiency of surgical treatment of chronic periodontitis with the filling with DBMNP in combination with PRP.
Subject(s)
Bone Regeneration , Chronic Periodontitis/diagnostic imaging , Chronic Periodontitis/surgery , Osteogenesis , Absorptiometry, Photon , Adult , Aged , Aged, 80 and over , Apicoectomy , Female , Humans , Male , Middle Aged , Young AdultABSTRACT
Cortical bone matrix (CBM) was fixed under the zygomatic arch of 20 experimental rabbits by the titanium wire. CBM transformed into the organotypic bone tissue during 90-180 days, and the transformation processes were more significant if the cortical layer of the inferior border of the zygomatic arch had been removed and CBM had been miotisized. Taking into account good results of the experiment, CBM was applied in clinic for treatment of habitual mandibular dislocation (HMD). The new operative approach to the TMJ and method for HMD using CBM was developed. It is easy to perform, less traumatic and provides reliable long-term results. Of 36 operated joint only one recurrence of the dislocation was observed.
Subject(s)
Bone Matrix/transplantation , Habits , Joint Dislocations/surgery , Temporomandibular Joint/injuries , Adolescent , Adult , Animals , Disease Models, Animal , Follow-Up Studies , Humans , Rabbits , Retrospective Studies , Temporomandibular Joint/surgery , Transplantation, Homologous , Treatment OutcomeABSTRACT
The authors suggest a splint with a supragingival supporting plate, that improves the reliability of orthodontic treatment and widens the range of indications for such treatment. They recommend osteosynthesis involving the use of a brefostem prepared from tubular bones of a 18-35 week fetus; the brefostem well fixes the fragments, stimulates the reparative processes at the site of the fracture, should not be removed after treatment, since it is eventually replaced by bone tissue not differing from the maxillary bone tissue.
