Serdyukov M.S., Abolmasov N.N., Massarsky I.G., Kovalkov V.K., Solovyev A.A.
Low clinical crowns of the teeth and their occurrence in patients with different kinds of occlusion
Smolensk State Medical University, Smolensk, Russia
Vestnik VGMU. 2018;17(1):100-106.
Objectives. To substantiate the application of the authors’ method for determining the height of the clinical crown of the tooth.
Material and methods. 394 students of SSMU underwent clinical examination and their plaster models were studied to determine the occlusion kind and the height of clinical crowns by means of the authors’ method (measurement from 4 sides with the determination of the arithmetic mean) and with the use of traditional methods (from the vestibular side). For measurement by the authors’ method a modified pair of compasses was used.
Results. When measuring the height of the clinical crowns of the teeth it is necessary to consider not a single parameter, but the data obtained on measurement from four surfaces with the calculation of the arithmetic mean. There is a relationship between the prevalence of low clinical crowns of the teeth and the bite, most often they occur in the lateral parts of the dentition (premolars and molars) with deep incisal overlap and deep forms of the bite, in 58±2,1% and 89,5±2,1% of patients, respectively.
The prevalence of low clinical crowns in 39±2,5%, established while determining of the height of the crowns according to our technique, objectively confirms the high percentage of noted in many studies recementations of the fixed prostheses in a very short space of time after prosthetic treatment.
Considering the concepts of correct occlusion, it can be noted that there is an indirect correlation of low clinical crowns with factors of balanced occlusion laws of the articulation theory of Gysi-Hanau.
Key words: low clinical crowns, clinical crown height, occlusion, orthodontic compasses, orthodontic measurements, control-diagnostic models.
1. Liman AA, Petrikas OA, Petrikas IV. Studying of durability of bond of an artificial crown of tooth with a supporting kultevy framework. Klin Stomatologiia. 2008;(3):100-1. (In Russ.)
3. Olesova VN, Maksyukov SYu, Kalashnikov VN. Complications and disadvantages of removable dentures and way of optimization of repeated denture treatment. Ros Stomatol Zhurn. 2009;(6):21-4. (In Russ.)
4. Sharagin NV, Morozov KA. Assessment of size of conicity of preparing of teeth at production of ceramic-metal crowns. Stomatologiia. 2012;91(1):59-61. (In Russ.)
5. Lebedenko IYu, Peregudov AB, Glebova TE, Lebedenko AI. Telescopic and latch fastenings of dentures. Moscow, RF: Molodaia gvardiia; 2004. 344 р. (In Russ.)
6. Naumovich SA, Naumovich SS, Titov PL, Kruglik AYu, Borunov AS, Dosta AN. Bases of a functional occlusion: ucheb-metod posobie. Minsk, RB: BGMU; 2010. 44 р. (In Russ.)
7. Dawson PE. Functional occlusion: From TMJ to smile design. St Petersburg, Florida: Mosby Elsevier; 2007. 648 р.
Information about authors:
Serdyukov M.S. – Candidate of Medical Sciences, lecturer of the Chair of Prosthetic Dentistry with the course of Orthodontics, Smolensk State Medical University;
Abolmasov N.N. – Doctor of Medical Sciences, professor, head of the Chair of Prosthetic Dentistry with the course of Orthodontics, Smolensk State Medical University;
Massarsky I.G. – Candidate of Medical Sciences, associate professor of the Chair of Prosthetic Dentistry with the course of Orthodontics, Smolensk State Medical University;
Kovalkov V.K. – Candidate of Medical Sciences, associate professor of the Chair of Prosthetic Dentistry with the course of Orthodontics, Smolensk State Medical University;
Solovyev A.A. – Candidate of Medical Sciences, associate professor of the Chair of Prosthetic Dentistry with the course of Orthodontics, Smolensk State Medical University.