Comparative evaluation of the location of occlusal landmarks on orthopantomogram and teleroentgenogram

A comparative analysis of the location of occlusal landmarks on orthopantomograms and teleroentgenograms in normal and abnormal occlusion was performed, which has a high level of information content when planning orthopedic treatment in patients with defects of the dental arches and dental-alveolar occlusion anomalies. During the comparative analysis of orthopantomograms and teleroentgenograms, it was determined that the infradental-occlusal horizontal, as a rule, was parallel to the gnathic horizontal. The ratio of the alveolar-articular line (Cond-A) to the length of the segment intersected by the articular circle line on the teleroentgenogram was 1.50±0.09. On the OPG, when analyzing the linear parameters, it was noted that the ratio of the distance from the point "Cond" to the intersection with the aesthetic median vertical to the segment of the articular circle intersected by the line was 1.61 ± 0.1, which was close in value to the Fibonacci number. This circumstance allowed the use of the "golden section" principle when determining the radius of the circle in case of anomalies in the position of molars in the vertical direction. Comparative analysis of the location of occlusal landmarks on the orthopantomogram and teleroentgenogram in the norm and in case of bite pathology showed that both methods of X-ray examination can be used in the clinic of orthopedic dentistry in the diagnosis of dentoalveolar forms of occlusion anomalies and for choosing treatment methods for patients with defects of the dental arches that are not limited from the distal side of the arch. In addition, the intersection point of the occlusal lines and infradental-occlusal horizontals, which are located in the same way on both types of radiographs, attracts attention, which makes both methods of radiographic examination acceptable in the clinical practice of dental prosthetics.

1. Analysis of the occlusal plane inclination in patients with class II and class III malocclusions / S.Y. Ivanov [et al.] // Institute of Dentistry. 2022. No. 3(96). P. 44-45.

2. Anatomical and topographic features of temporomandibular joints in various types of mandibular arches / D.A. Domeniuk [et al.] // Medical Bulletin of the North Caucasus. 2019. Vol. 14. No. 2. P. 363-367. doi: 10.14300/mnnc.2019.14089.

3. Clinical I.D. characteristics of deep bite in adolescents with various degrees of severity of connective tissue dysplasia / I.D. Ushnitsky [et al.] // Vestnik of North-Eastern Federal University. Medical Sciences. 2024. No. 1(34). P. 42-48. doi: 10.25587/2587-5590-2024-1-42-48.

4. Determination of the form of distal occlusion of dental rows by the method of comparative analysis of the parameters of the cranio-facial complex / M.V. Vologina, D.I. Fursik, V.V. Bavlakova, A.A. Litvinova // Journal of Volgograd State Medical University. 2017. No. 4(64). P. 112-114. doi: 10.19163/1994-9480-2017-4(64)-112-114.

5. Optimization of quality assessment of dental treatment using unified technology / T.V. Kolesova, V.N. Naumova, L.N. Denisenko, S.P. Derevyanchenko // Dental Forum. 2021. № 4(83). P. 43-44.

6. Criteria for the characteristics of the occlusal surface of teeth in young people with proper lateral tooth closure / L.V. Dubova [et al.] // Orthodontics. 2023. No. 4(104). P. 16-20.

7. Solodkaya K.I., Petrovskaya V.V., Gioeva Yu.A. Studying the shape and position of the bones of the base of the skull in people with different types of facial skeleton using cone beam computed tomography // Dentistry. 2020. Vol. 99. No. 6. P. 38-43. doi: 10.17116/stomat20209906138.

8. Fadeev R.A., Kuzakova A.V. A modified method for analyzing profile telerentgenograms of the skull (Part II) // Institute of Dentistry. 2009. No. 2(43). P. 28-29.

9. Fadeev R.A., Lanina A.N., Andreishchev A.R. Using the results of radioencephalometric analysis for quantitative analysis of dentooralfacial disorders // Diagnostic radiology and radiotherapy. 2012. No. 1(3). P. 50-61.

10. Fomin I.V. Methods for determining landmarks for constructing the mandibular plane on X-rays // Volgograd scientific and medical journal. 2023. Vol. 20. No. 2. P. 11-15.

11. Fomin I.V. Features of the location of the mandibular and occlusive planes on teleradiograms with different types of facial growth // Volgograd scientific and medical journal. 2023. Vol. 20. No. 2. P. 26-29.

12. Chekanin I.M., Becker D.S., Malykh V.S. The relationship of the shape and size of dental arches with the parameters of the craniofacial complex in mesocephaly // Bulletin of scientific conferences. 2023. No. 5-3(93). P. 117-121.

13. Biometry of permanent occlusion dental arches – comparison algorithm for real and design indicators / V. Borodinа, D. Domenyuk, L. Weisheim, S. Dmitrienko // Archiv EuroMedica. 2018. V. 8. No. 1. P. 25-26. doi: 10.35630/2199-885X/2018/8/1/25.

14. Dependence of stress strain hard tissues and periodont on horizontal deformation degree / A.V. Lepilin [et al.] // Archiv EuroMedica. 2019. Vol. 9. No. 1. P. 173-174. doi: 10.35630/2199-885X/2019/9/1/173.

15. Mathematic simulation for upper dental arch in primary teeth occlusion / M. Porfiriadis, S. Dmitrienko, D. Domenyuk, G. Budaychiev // Archiv EuroMedica, 2018. Vol. 8. No. 1. P. 36-37. doi: 10.35630/2199-885X/2018/8/1/36.

16. Non-removable arch orthodontic appliances for treating children with congenital maxillofacial pathologies – efficiency evolution / V. Shkarin, B. Davydov, D. Domenyuk, S. Dmitrienko // Archiv EuroMedica. 2018. Vol. 8. No. 1. P. 97-98. doi: 10.35630/2199-885X/2018/8/1/97.