RESULTS OF EDGE ADAPTATION OF MONOLITHIC ZIRCONIA CROWNS

Sabina Alieva

doi:doi:10.18481/2077-7566-2019-15-3-133-138

CSCSTI 76.29

RESULTS OF EDGE ADAPTATION OF MONOLITHIC ZIRCONIA CROWNS

Published в Actual problems in dentistry · Volume 15, Issue 3, 2019 · Pages 133–138 · Rubrics: ORTHOPEDIC DENTISTRY

DOI 10.18481/2077-7566-2019-15-3-133-138

Received: 20.10.2019 Accepted: 25.10.2019 Published: 25.10.2019 Language of publication: RUS

Authors

Sabina Alieva ¹

1 Azerbaijan Medical University (Department of Orthopedic Dentistry)
Baku, Russian Federation

ABSTRACT

Subject. Edge clearance and mechanical strength are important factors for selecting all-ceramic zirconia crowns. The article presents the results of evaluating the regional adaptation of single monolithic zirconia crowns mounted on premolars and molars made using the CAD/CAM system. Objectives — a clinical assessment of the edge conformity and absolute marginal discrepancy of single monolithic zirconia crowns made by the CAD/CAM system and fixed on premolars and molars. Materials and methods. 75 patients (mean age 34.9 ± 3.77 years) with monolithic zirconia crowns fixed 6 months ago were examined. 3Shape software, Zenotec CAM Wieland Dental system, CNC Wieland Select milling machine, Zenostar translucent blanks were used. The measurements were performed in vivo. Marginal clearance and absolute marginal mismatch are measured with an optical microscope. All measured data were averaged based on four positions: edge, rounded shoulder, axial wall, and occlusal area. Results. 98 crowns were established: in 74.7 % of cases 1 crown was installed, in 20.0 % of cases — 2 crowns, in 5.3 % of cases — 3 crowns. 48 crowns are installed on premolars, 50 — on 1 and 2 molars. On the upper jaw 22 were fixed on premolars, 20 restorations on molars, 26 and 30 crowns on the lower jaw, respectively. The average value of the edge gap was 90.6 ± 20.71 μm, and the average values of the absolute edge discrepancy were 164.90 ± 22.28 μm. The marginal gap of premolars and molars averaged 90.8 ± 18.96 μm and 89.14 ± 21.0 μm, respectively, and the absolute boundary discrepancy was 165.82 ± 19.95 and 163.11 ± 22.37 μm, respectively. Conclusion. The results of the marginal fit and the absolute marginal divergence of monolithic crowns based on zirconium dioxide are within the limits of clinical acceptability. 2. It is necessary to take measurements before and after the sintering process.

KEYWORDS

monolithic crowns zirconium dioxide CAD/CAM premolars molars marginal fit absolute marginal divergence

Information References

Authors:

1. Azerbaijan Medical University (Department of Orthopedic Dentistry)

Baku, Russian Federation

Type:

Article

Pages:

from 133 to 138

Status:

Published

Subject area:

CSCSTI 76.29

Language:

Russian

Keywords:

monolithic crowns, zirconium dioxide, CAD/CAM, premolars, molars, marginal fit, absolute marginal divergence

References

1. Zhulev, E. N., Vokulova, Ju. A. (2017). Rezul'taty izucheniya kachestva krayevogo prileganiya karkasov iz dioksida tsirkoniya, izgotovlennykh s primeneniyem tekhnologii vnutrirotovogo lazernogo skanirovaniya Itero-Cadent v eksperimente [The results of studying the quality of the edge fit of zirconia frames made using the Itero-Cadent intraoral laser scanning technology in the experiment]. Sovremennye problemy nauki i obrazovanija [Modern problems of science and education], 1, http://www.science-education.ru/ru/article/view?id=25903 (In Russ.)

2. Demir, N., Ozturk, A. N., Malkoc, M. A. (2014). Evaluation of the marginal fit of full ceramic crowns by the microcomputed tomography (micro-CT) technique. Eur J Dent, 8, 437-444. http://dx.doi.org/10.4103/1305-7456.143612

3. Kokubo, Y., Tsumita, M., Kano, T., Sakurai, S., Fukushima, S. (2011). Clinical marginal and internal gaps of zirconia all-ceramic crowns. Journal of Prosthodontic Research, 55 (1), 40-43. https://doi.org/10.1016/j.jpor.2010.09.001

4. Al-Atyaa, Z. T., Majeed, M. A. (2018). Comparative Evaluation of the Marginal and Internal Fitness of Monolithic CAD/CAM Zirconia Crowns Fabricated from Different Conventional Impression Techniques and Digital Impression Using Silicone Replica Technique (An in vitro study). Biomed Pharmacol J, 11 (1), 477-490. http://dx.doi.org/10.13005/bpj/13974

5. Mirzoeva, M. S., Zholudev, S. E. (2018). Sravnitel'naya kharakteristika plotnosti prileganiya keramicheskikh vkladok - eksperimental'noye issledovaniye [Comparative characteristics of the adherence density of ceramic inlays - an experimental study]. Problemy stomatologii [Dental problems], 14 (3), 41-44. (In Russ.)

6. Rogozhnikov, A. G. (2018). Rezul'taty eksperimental'nykh issledovaniy, napravlennykh na otsenku biologicheskikh svoystv modifitsirovannykh granul dioksida tsirkoniya [The results of experimental studies aimed at assessing the biological properties of the modified granules of zirconium dioxide]. Problemy stomatologii [Dental problems], 11 (3-4), 49-56. (In Russ.)

7. Timacheva, T. B., Klimova, T. N. (2016). Effektivnost' primeneniya tsel'notsirkoniyevykh konstruktsiy pri protezirovanii patsiyentov s nizkimi klinicheskimi koronkami zubov v ramkakh kontseptsii minimal'noy invazii [The effectiveness of the use of whole-zirconium structures for prosthetics of patients with low clinical tooth crowns within the framework of the concept of minimal invasion]. Mezhdunarodnyy nauchno-issledovatel'skiy zhurnal [International Research Journal], 12 (54), 5, 113-116. (In Russ.)

8. Makhmudov, M. M., Ashurov, G. G. (2018). Indeksnyye i gidrodinamicheskiye pokazateli tkaney parodonta ka kriteriy rezul'tativnosti lecheniya travmaticheskogo porazheniya tkaney parodonta konstruktsiyami zubnykh protezov [Index and hydrodynamic indicators of periodontal tissues as a criterion for the effectiveness of the treatment of traumatic lesions of periodontal tissues with dental prosthesis designs]. Problemy stomatologii [Dental problems], 13 (2), 64-68. (In Russ.)

9. Özkurt-Kayahan, Z. (2016). Monolithic zirconia: A review of the literature. Biomed Res J. , 27 (4), 1427-1436.

10. Saraswathi, D. D., Leneena, G., Babu, M. R. et al. (2016). Comparative Evaluation of Marginal Vertical Discrepancies of Full Zirconia Crowns, Layered Zirconia Crowns, and Metal Ceramic Crowns: An In Vitro Study. J Int Oral Health, 8 (2), 208-213.

11. Shatrov, I. M., Vedernikova, L. V., Zholudev, S. E. (2018). Izucheniye kachestva zhizni u patsiyentov s defektami zubov i zubnykh ryadov posle ortopedicheskogo lecheniya s ispol'zovaniyem keramicheskikh restavratsiy [The study of the quality of life in patients with defects in teeth and dentition after orthopedic treatment using ceramic restorations]. Problemy stomatologii [Dental problems], 9 (4), 53-57. (In Russ.)

12. Zinovenko, O. G., Shinkevich, M. V., Sadovskaya, I. V. (2014). Esteticheskoye protezirovaniye s primeneniyem dioksida tsirkoniya [Aesthetic prosthetics using zirconia]. Sovremennaya stomatologiya [Modern dentistry], 2 (59), 58-60. (In Russ.)

13. Gherlone, E., Mandelli, F., Capparè, P., Pantaleo, G., Traini, T., Ferrini, F. (2014). A 3 years retrospective study of survival for zirconia-based single crowns fabricated from intraoral digital impressions. Journal of Dentistry, 42 (9), 1151-1155. https://doi.org/10.1016/j.jdent.2014.06.002

14. Seok-Joon, Ha., Jin-Hyun, Cho. (2016). Comparison of the fit accuracy of zirconia-based prostheses generated by two CAD/CAM systems. J Adv Prosthodont, 8, 439-448. https://doi.org/10.4047/jap.2016.8.6.439

15. Chayka, Z. S. (2018). Sovremennyye metody planirovaniya optimal'nogo esteticheskogo rezul'tata vo frontal'nom uchastke zubnogo ryada s ispol'zovaniyem pryamykh i nepryamykh restavratsiy [Modern methods of planning the optimal aesthetic result in the frontal area of the dentition using direct and indirect restorations]. Problemy stomatologii [Dental problems], 13 (3), 80-84. (In Russ.)

16. Martínez-Rus, F., Suárez, M. J., Rivera, B., Pradíes, G. (2011). Evaluation of the absolute marginal discrepancy of zirconia-based ceramic copings. J Prosthet Dent, 105, 108-114. https://doi.org/10.1016/S0022-3913(11)60009-

17. Boitelle, P., Mawussi, B., Tapie, L., Fromentin, O. (2014). A systematic review of CAD/CAM fit restoration evaluations. J. Oral Rehabil, 41, 853-874. https://doi.org/10.1111/joor.12205

18. Molin, M. K., Karlsson, S. L., Kristiansen, M. S. (1996). Influence of film thickness on joint bend strength of a ceramic/resin composite joint. Dent Mater, 12, 245-249. https://doi.org/10.1016/S0109-5641(96)80030-3

19. McLean, J. W., von Fraunhofer, J. A. (1971). The estimation of cement film thickness by an in vivo technique. Br Dent J, 131, 107-111. https://doi.org/10.1038/sj.bdj.4802708

20. Holmes, J. R., Bayne, S. C., Holland, G. A., Sulik, W. D. (1989). Considerations in measurement of marginal fit. J prosthet dent, 62, 405-408. https://doi.org/10.1016/0022-3913(89)90170-4\

21. (2013). World Medical Association Declaration of Helsinki Ethical Principles for Medical Research Involving Human Subjects. JAMA, 310 (20), 2191-2194.

22. Holm, S. (1979). A simple sequentially rejective multiple test procedure. Scand J stat, 6, 65-70.

23. Sattar, J., Abdul-Zahra, Al., Hmedat, S. (2017). A Comparison of Vertical Marginal Fit of different Brands of Translucent Zirconia Crown Restorations. J Bagh Coll Dentistry, 29 (2), 33-41.

24. Uhanov, M. M., Karapetjan, A. A., Rjahovskij, A. N., Avakov, G. S. (2018). Metody otsenki krayevogo prileganiya nes"yemnykh protezov s oporoy na zuby i implantaty [Methods for assessing the marginal fit of fixed prostheses based on teeth and implants]. Rossijskij vestnik dental'noj implantologii [Russian Bulletin of Dental Implantology], 1-2, (39-40), 39-54. (In Russ.)

25. Riccitiello, F., Amato, M., Leone, R., Spagnuolo, G., Sorrentino, R. (2018). In vitro Evaluation of the Marginal Fit and Internal Adaptation of Zirconia and Lithium Disilicate Single Crowns: Micro-CT Comparison Between Different Manufacturing ProceduSres. Open Dent J, 12, 160-172. doi:https://doi.org/10.2174/1874210601812010160

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RESULTS OF EDGE ADAPTATION OF MONOLITHIC ZIRCONIA CROWNS

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