[Treatment tactics for patients with retention cysts, odontogenic cysts, mucocele and other pathologies of the maxillary sinuses as preparation for a sinus lift]. / Lechebnaya taktika v otnoshenii retentsionnykh kist, odontogennykh kist, mukotsele i drugikh zabolevanii verkhnechelyustnoi pazukhi pri podgotovke k sinus-liftingu.

OBJECTIVE: The aim the studi. Differential diagnosis of retention cysts of the maxillary sinus with odontogenic cysts, acute and chronic sinusitis, aspergillosis, and mucocele in preparation for sinus-lifting surgery. MATERIAL AND METHODS: The analysis of the case histories of 265 patients aged 18-65 years of both sexes who were treated at the dental clinic «Rudenta Family¼ from 2016 to 2021 was carried out. On the basis of clinical symptoms and data of cone-beam computed tomography (CBCT), a description of the pathologies of HPV is given for the purpose of differential diagnosis and correct interdisciplinary interaction with ENT doctors for the purpose of dental implantation in the lateral parts of the upper jaw. RESULTS: In 90 (out of 265) patients (34%), a change in the condition of the maxillary sinus mucosa was detected. 18 patients (7%) for preoperative preparation were sent to the ENT department of the FSBI «CCB with polyclinic¼ of the UDP of the Russian Federation with diagnoses: chronic maxillary sinusitis of various etiologies and mucocele. In this group of patients, sinus lifting followed by dental implantation was performed 6 months after endoscopic maxillofacial surgery under the control of CBCT. Retention cyst Retention cysts of the maxillary sinus were of different sizes in 62 (23.4%) patients and, depending on the size and localization of the sinus-lifting was performed with simultaneous removal of the cyst, or without removal of the cyst. CONCLUSION: Retention cysts do not need to be removed as a preoperative preparation for sinus lifting. In the case of large sizes and difficulty in peeling the Schneider membrane, retention cysts are removed by a dental surgeon during antral augmentation as one of the stages of the operation. In such pathologies as odontogenic cyst, acute and chronic sinusitis, aspergillosis, mucocele, interdisciplinary interaction of ENT doctor and dentist is necessary. Differential diagnosis of maxillary snus pathology is carried out on the basis of clinical data and a picture of cone-beam computed tomography.

[Clinical efficacy of hydroxyapatite and tricalcium phosphate modified with hyaluronic acid in the treatment of patients with periimplantitis]. / Klinicheskaya effektivnost' primeneniya gidroksiapatita i trikal'tsiifosfata, modifitsirovannykh gialuronovoi kislotoi v lechenii patsientov s periimplantitami.

THE AIM OF THE STUDY: Was to assess the effectiveness of the use of hydroxyapatite (HAP) and tricalcium phosphate (TCF) modified with hyaluronic acid in the treatment of patients with periimplantitis. MATERIALS AND METHODS: Clinical studies were conducted in 128 patients (44% male and 56% female) aged up to 55 years, who sought dental care with the main diagnosis of periimplant mucositis and periimplantitis. To compare the features of osseointegration of dental implants under bone remodeling three groups of patients were formed: one control and 2 main ones. In the control group the wound was managed under a blood clot, in the first main group HAP and TCF and in the second main group HAP and TCF modified with hyaluronic acid were used. X-ray examination was performed in various modes. Clinical assessment of implant stability in the operated area was carried out using subjective (percussion and palpation method) and objective method of frequency resonance analysis using the Osstell ISQ device calculating the stability coefficient of the dental implant (SCDI). RESULTS: 12 months after the periimplant zone remodeling procedure the bone resorption rates surrounding the implant were statistically significantly the lowest in the second main group (0.682±0.006 mm, p<0.001) compared with the values in the control and first main groups (1.626±0.022 and 1.025±0.034 mm, respectively). In the former groups bone resorption continued to progress during the observation period. In patients of the second main group, the average values of the SCDI for all study periods were 68.97±1.09 units which turned out to be the highest indicator and significantly differed from the values of other observation groups (p<0.05), which may be due to a tighter fit of the implants to the surface of the newly formed bone tissue. CONCLUSION: The results of the study 12 months after the periimplant zone remodeling operation procedure prove the efficacy of HAP and TCF modified with hyaluronic acid for the treatment of patients with periimplantitis.