Based on 79 lateral projection head teleroentgenograms obtained from relatively young patients (median age, 37.4±4.3), we have developed a method for the occlusal plane orientation in view of cranio-facial anatomical reference points. As stable anthropometric reference points, we employed the gnathic angle shaped by the spinal and mandibular planes, as well as the interalveolar angle, where the subspinal Downs point and the supramental point were employed as retention elements. When reconstructing the occlusal plane in patients with dentoalveolar anomalies, the construction of the bisector of the interalveolar angle was explained as a key reference point, which allows diagnosing occlusion anomalies in the vertical direction (symmetrical and asymmetric) not only in the lateral, yet also in the frontal segment of the dental arches. The method developed for constructing the occlusal plane does not depend on the position of the incisors and the second permanent molars, which can be used to identify the vertical deformation of the dental arches.

Cone-beam computed tomograms of 68 people (age — 21–35) with physiological occlusion and various gnathic dental arches were analyzed by a method developed for identifying the palatal arch index, taken as a height (depth)-to-width dimension ratio. The results of the study revealed that palatal parameters are determined by main variants (types) of the palatal vault. In case of the mesopalatal type of the arch (index value — 35–45%), the width parameters exceeded the depth values by an average of 2.4 times, while the divergence angle of alveolar processes was 116.7 ± 5.6°. The dolichopalatal type of the arch (index value – above 45%) featured domination of the width parameters over the depth-related ones, by an average of 1.8 times, while the alveolar processes divergence angle made up 127.6 ± 6.1°. As far as the brachypalatal type of the arch is concerned (index value — below 35%), the width parameters exceeded the depth parameters by 4.0 times on average, the divergence angle of the alveolar processes being 113.5 ± 5.3°. The obtained data can be used in clinical orthodontics when diagnosing pathologies of the palatal vault, as well as to interpret data from additional methods of examination and to choose the right treatment for issues related to the dental arch shape and size.

The results of clinical, photometric, morphometric, radiological and functional studies were employed to develop an advanced methodology for treating patients with dentoalveolar transversal divergent occlusion. The dentoalveolar type of transversal divergent occlusion has been identified as being both an independent nosological issue and can be combined with other issues and deformations affecting dentoalveolar arches. The developed concept for comprehensive rehabilitation of patients with dentoalveolar transversal divergent occlusion complicated by dentition issues has a following algorithm: counseling, diagnosis, splint treatment using a distracting splint, previously completed orthodontic treatment, splint treatment using a stabilizing splint, final orthodontic treatment, aesthetic and functional prosthetics. Comprehensive rehabilitation offered to patients with dentoalveolar transversal divergent occlusion is aimed at improving the jaw bones position and the occlusion. Thus, it creates multiple fissure-tubercle dentition contacts; stabilizes the lower jaw position; improves position of intra-articular structures. The comprehensive rehabilitation enable eliminating functional disorders, muscle excessive tension and pain symptom. In general, the face profile as well as the occlusal plane horizontal position is improved.

Morphometric data on the structure of the craniofacial complex are reliable and diagnostically significant values that are of applied nature in terms of practical dentistry. Within this study, analysis of conebeam computed tomograms, biometric indicators of plaster models obtained from the jaws of 83 people (aged 21–35) with physiological occlusion and various types of dental, gnathic dental arches, the degree of proportion between the maxillary apical base and the inter-canine distance were identified. Depending on the dental arch type, the patients were divided into three groups. The morphometric study in the CBCT frontal plane was the distance between the canines tearing tubercles and the inter-canine distance in the apical area. The study outcomes revealed discrepancies between the calculated and actual indicators of the apical base width for all types of dental arches in people with physiological occlusion. In case of mesotrusive dental arches (incisional angle — 127–143°), the width of the apical base corresponded to the width of the dental arches between the canines, while the differences in indicators were not statistically significant. In people with retrusive dental arches (incisional angle exceeding 144°), the width of the dental arch was found to be significantly above the width of the apical bases. As far as protrusive dental arches are concerned (incisional angle below 126°), these patients featured predominance of the apical bases width over the inter-canine distance. The obtained data add to that already available in research literature regarding the relationships and dimensional features pertaining to the craniofacial complex structures, as well as have applied value in orthodontic clinical practice

According to World Health Organization about 15% of the world’s adult population suffer from complete adentia, with a steady growth in the number of patients affecting not only the elderly which is accounted for by an increase in life expectancy, yet also among people in their working age. Apart from disturbed chewing and speech functions, complete adentia leads to altered anatomical and topographic proportions of the face and facial skeleton, progressive atrophy and osteoporosis of the jaws, masticatory and mimic muscle atrophy, as well as to dysfunction affecting these muscles and temporomandibular joints. Due to lack of proper nutrition, changed exterior, issues in interaction with others, this group of patients develop a whole set of psychosomatic reactions finally causing social withdrawal. Rehabilitation of patients with complete loss of teeth is an urgent issue. However, the effectiveness of prosthetic treatment depends not only on the denture manufacturing technology, but on the quality of functioning involving the maxillofacial organs in combination with the respective orthopedic appliances. Whereas precise and reliable assessment of the maxillofacial neuromuscular balance enables to predict immediate and long-term outcomes of orthopedic treatment. Employing the principles of neuromuscular dentistry allows us to assess reliably the changes in the reflex mechanisms of muscular apparatus. This was carried out throughout all the stages of prosthetic treatment in patients with complete adentia with intraosseous implants with fixed bridges and conditionally removable denture.