scholarly journals Socket Preservation During Preimplantation Period: Effi cacy of Osteoplastic Material Application Using Cone Beam Computed Tomography

2019 ◽  
Vol 26 (6) ◽  
pp. 70-79
Author(s):  
Nikolay A. Red’ko ◽  
Aleksey Yu. Drobyshev ◽  
Dmitry A. Lezhnev
Keyword(s):  
Computed Tomography ◽  
Bone Resorption ◽  
Bone Tissue ◽  
Cone Beam Computed Tomography ◽  
Tooth Extraction ◽  
Cone Beam ◽  
Socket Preservation ◽  
Dentin Matrix ◽  
Osteoplastic Material ◽  
Group 1

Aim. To analyse the effi ciency of osteoplastic material application in order to reduce the resorption level after tooth extraction in the preimplantation period according to the data of cone beam computed tomography.Materials and methods. The study involved 80 patients who were divided into 4 equal groups depending on the preservation material used. The fi rst group was treated with Cerabone (Botiss, Germany) xenomaterial based on natural bovine bone. Plasma enriched with PRGF growth factors obtained by the BTI Endoret (Spain) technology was used for the patients of the second group. The third group consisted of patients who underwent a socket preservation of the extracted tooth with a powdered autologous dentin matrix (ADM) obtained from their own tooth. In the fourth group, bone-plastic material based on hydroxyapatite with Collapan-L lincomycin hydrochloride (Intermedapatit, Russia) was used to prevent socket resorption. All patients had a cone beam computed tomography of the maxillofacial region before the extraction and 3 months after the preservation in order to evaluate the level of bone resorption. After the installation of dental implants, a comparative assessment of the bone resorption level in the vertical and horizontal directions before tooth extraction and in the preimplantation period was carried out.Results. The smallest level of vertical bone resorption after socket preservation was observed in group 1 (Cerabone) and group 3 (ADM). The median value of the socket resorption level in group 1 was 0.7 mm (8.54 %) in the vertical direction and 0.5 mm (9.45 %) in horizontal measurement as compared to the level of bone tissue before tooth extraction. Similar indicators were observed in the group using an autologous dentin matrix. The vertical decrease in the socket bone tissue was 0.61 mm (7.75 %), horizontal — 0.51 mm (6.2 %). The level of bone resorption was signifi cantly higher using two other materials.Conclusions. The use of three-dimensional radiation research methods allows a comprehensive assessment of the bone tissue volume to be carried out, which in turn determines the choice of the dental implant size, the need for further bone-plastic surgery to increase the width/height of the alveolar ridge. The use of cone beam computed tomography showed that the most optimal results can be obtained by introducing Cerabone material into the socket of the extracted tooth, as well as using the innovative method of preservation with the patient’s own powdered tooth (ADM).

Peri-implant bone tissue assessment by comparing the outcome of intra-oral radiograph and cone beam computed tomography analyses to the histological standard

2010 ◽  
Vol 22 (5) ◽  
pp. 492-499 ◽  
Author(s):  
Livia dos Santos Corpas ◽  
Reinhilde Jacobs ◽  
Marc Quirynen ◽  
Yan Huang ◽  
Ignace Naert ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Bone Tissue ◽  
Cone Beam Computed Tomography ◽  
Cone Beam

scholarly journals Three-dimensional cone-beam computed tomography comparison of shorty and standard Class II Carriere Motion appliance

2021 ◽  
Author(s):  
Brian Wilson ◽  
Nikoleta Konstantoni ◽  
Ki Beom Kim ◽  
Patrick Foley ◽  
Hiroshi Ueno
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Treatment Effects ◽  
Three Dimensional ◽  
Class Ii ◽  
Cone Beam ◽  
Class Ii Malocclusion ◽  
Dimensional Cone ◽  
Group 2 ◽  
Group 1

ABSTRACT Objectives To compare treatment effects of the standard and shorty Class II Carriere Motion appliances (CMAs) on adolescent patients. Materials and Methods Fifty adolescents with Class II malocclusion formed group 1, who were treated with shorty CMA (n = 25, 12.66 ± 1.05 years), and age- and sex–matched group 2, who were treated with standard CMA (n = 25, 12.73 ± 1.07 years). Treatment effects were analyzed by tracing with Invivo software to compare pretreatment (T1) cone-beam computed tomography (CBCT) images with post-CMA (T2) CBCT images. A total of 23 measurements were compared within and between groups. Results In groups 1 and 2, maxillary first molars showed significant distal movement from T1 to T2 (1.83 ± 2.11 mm and 2.14 ± 1.34 mm, respectively), with distal tipping and rotation in group 1 (6.52° ± 3.99° and 3.15° ± 7.52°, respectively) but only distal tipping (7.03° ± 3.45°) in group 2. Similarly, in both groups, the maxillary first premolars experienced significant distal movement with distal tipping but no significant rotation. In group 1, maxillary canines did not undergo significant distal movement. In both groups 1 and 2, mandibular first molars experienced significant mesial movement (1.85 ± 1.88 mm and 2.44 ± 2.02 mm, respectively). Group 1 showed statistically significantly less reduction in overjet and less canine distal movement with less distal tipping than group 2 (α < .05). Conclusions The shorty CMA achieved Class II correction similarly to the standard CMA, with less change in overjet and distal tipping movement of the maxillary canines.

scholarly journals STUDY OF THE ANATOMY OF THE MENTAL FORAMEN USING CONE-BEAM COMPUTER TOMOGRAPHY

2020 ◽  
Vol 16 (3) ◽  
pp. 90-95
Author(s):  
Irina Shelegova ◽  
Artur Heigetyan ◽  
Dar'ya Vazhenina ◽  
Natal'ya Nurieva
Keyword(s):  
Computed Tomography ◽  
Bone Tissue ◽  
Optical Density ◽  
Cone Beam Computed Tomography ◽  
Anatomical Variation ◽  
Mental Foramen ◽  
Cone Beam ◽  
Cortical Plate ◽  
Mineral Density ◽  
The Right

Subject. The article discusses the possibilities of cone-beam computed tomography in the study of the anatomy of the mental foramen: size, shape, topography, as well as the optical density of bone tissue at the mental foramen. The goal is to investigate the size, shape and topography of the mental foramen, as well as the optical density of bone tissue in it using cone-beam computed tomography. Methodology. The computed tomograms of the lower jaws of 26 patients were analyzed, according to which the vertical and horizontal dimensions of the mental openings were measured on the right and left, the number and sizes of additional mental openings, their location according to the Tebo and Telford classification, and the bone mineral density under the mental opening were determined. Statistical analysis was carried out using Microsoft Excel, Windows 9. Results. The resulting average dimensions of the right (4.01x3.93 mm) and left (3.81x3.95) mental holes confirm the results of more extensive studies done earlier. In the first case (1.9 %), an anatomical variation of the mental opening was revealed: 3 holes with dimensions 2.1×2.1 mm, 2.0×0.9, and 1.9×2.4. The symmetrical location of the chin foramen was found in 15 patients (57.7 %). In most cases, types III (25 %) and IV (53.84 %) of the location of the mental opening were identified. The average optical density of bone tissue under the mental foramen on the right side was 1618.9±145.1 HU, on the left ― 1571.64±159.64. There were no significant differences in the optical density of bone tissue for types II―IV of the location of the mental foramen. Conclusions. A significant variability in the topography of the mental foramen was revealed, in this regard, methods of mental anesthesia with a personalized approach, for example, the method of anesthesia of the intraosseous part of the chin nerve, are becoming relevant (authors Rabinovich S.A., Vasiliev Yu.L., Tsybulkin A.G.). High values of the optical density of bone tissue at the mental foramen confirm the ineffectiveness of diffusion of anesthetics through the cortical plate.

EVALUATING OPTICAL DENSITY OF ALVEOLAR BONE IN PATIENTS WITH DIABETES MELLITUS USING CONE-BEAM COMPUTED TOMOGRAPHY

2021 ◽  
Vol 11 (2) ◽  
pp. 108-117
Author(s):  
Natalya Prozorova ◽  
Roman Fadeev ◽  
Victor Weber ◽  
Marina Chibisova ◽  
Natalia Robakidze ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Computed Tomography ◽  
Bone Tissue ◽  
Optical Density ◽  
Cone Beam Computed Tomography ◽  
Alveolar Bone ◽  
Cone Beam ◽  
Root Tips ◽  
Patients With Diabetes ◽  
Tomography Data

The study involved an analysis of optical density of the maxillary and mandibular bone tissue based on cone-beam computed tomography data. It has been shown that the structure and bone tissue density depend on the severity of diabetes mellitus and complications. The results of the study revealed a significant decrease in the bone tissue optical density at the tooth necks in people suffering from diabetes mellitus, whereas fewer changes were manifested at the middle third of the dental roots. Minor changes or even an increase in the optical density were observed at the dental root tips.

scholarly journals Buccolingual inclination of molars in untreated children and adults: A cone beam computed tomography study

2018 ◽  
Vol 89 (1) ◽  
pp. 87-92 ◽  
Author(s):  
Brianna Yang ◽  
Chun-Hsi Chung
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Cone Beam ◽  
Maxillary Molars ◽  
Computed Tomography Images ◽  
Group 3 ◽  
Left And Right ◽  
Group 2 ◽  
Mandibular First Molar ◽  
Group 1

ABSTRACT Objectives: To evaluate and compare the buccolingual inclinations of maxillary and mandibular first molars in untreated children and adults. Materials and Methods: One hundred and thirty-eight subjects were selected and divided into three groups, as follows: (1) age 6–9 years, N = 46; (2) age 10–19 years, N = 56; and (3) age 25–35 years, N = 36. For each subject, existing cone beam computed tomography images were used, and the long axis for each maxillary and mandibular first molar was determined. The converge angles formed by the long axis of left and right maxillary first molars and by the long axis of left and right mandibular first molars were measured. Results: The maxillary molars exhibited buccal inclination, with the converge angle of 21.1° ± 9.5° in group 1, 17.3° ± 8.6° in group 2, and 9.3° ± 7.3° in group 3. Statistically significant differences were found between groups 1 and 3 and groups 2 and 3, but not between groups 1 and 2. The mandibular molars exhibited lingual inclination, with the converge angle of 34.9° ± 11° for group 1, 26.6° ± 9.2° for group 2, and 26.1° ± 7.7° for group 3. Statistically significant differences were found between groups 1 and 2 and groups 1 and 3, but not between groups 2 and 3. Conclusions: Maxillary first molars exhibited buccal inclination. Adults displayed less inclination than did children. Mandibular first molars exhibited lingual inclination. Adults displayed less inclination than did children. Some degree of curve of Wilson should be maintained at the end of orthodontic treatment to fulfill physiologic needs and stability.

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