Influence of one- or two-stage methods for polymerizing complete dentures on adaptation and teeth movements
Influência dos métodos de um ou dois estágios para polimerização de próteses totais na adaptação e movimentação de dentes
Nogueira, Moises; Caetano, Conrado Reinoldes; Correr, Americo; Consani, Rafael; Santos, Mateus Bertolini Fernandes dos; Bacchi, Atais
Abstract
Introduction: The quality of complete dentures might be influenced by the method of confection. Objective: To evaluate the influence of two different methods of processing muco-supported complete dentures on their adaptation and teeth movements. Material and method: Denture confection was assigned in two groups (n=10) for upper and lower arches according to polymerization method: 1) conventional one-stage - a wax trial base was made, teeth were arranged and polymerized; 2) two-stage method - the base was waxed and first polymerized. With the denture base polymerized, the teeth were arranged and then, performed the final polymerization. Teeth movements were evaluated in the distances between incisive (I-I), pre-molars (P-P), molars (M-M), left incisor to left molar (LI-LM) and right incisor to right molar (RI-RM). For the adaptation analysis, dentures were cut in three different positions: (A) distal face of canines, (B) mesial face of the first molars, and (C) distal face of second molars. Result: Denture bases have shown a significant better adaptation when polymerized in the one-stage procedure for both the upper (p=0.000) and the lower (p=0.000) arches, with region A presenting significant better adaptation than region C. In the upper arch, significant reduction in the distance between I-I was observed in the one-stage technique, while the two-stage technique promoted significant reduction in the RI-RM distance. In the lower arch, one-stage technique promoted significant reduction in the distance for RI-RM and two-stage promoted significant reduction in the LI-LM distance. Conclusion: Conventional one-stage method presented the better results for denture adaptation. Both fabrication methods presented some alteration in teeth movements.
Keywords
Resumo
Introdução: A qualidade das próteses totais pode ser influenciada pelo método de confecção. Objetivo: Avaliar a influência de diferentes métodos de confecção de próteses totais na adaptação e movimentação de dentes. Material e método: A confecção das próteses foi dividida em dois grupos (n=10) para arcadas superior e inferior de acordo com o método: 1) convencional de uma etapa - realizada uma base de prova em cera onde foram montados os dentes e levada para a termopolimerização; 2) Método de duas etapas - a base foi encerada e termopolimerizada. Com a base da prótese polimerizada, os dentes foram montados e em seguida realizou a polimerização da outra porção. Para movimentação de dentes foram avaliadas as distâncias entre incisivos (I-I), pré-molares (PM-PM), molares (M-M), incisivo esquerdo a molar esquerdo (IE-ME) e incisivo direito a molar direito (ID-MD) antes e após polimerização final. As próteses foram seccionadas em três posições para análise de adaptação: (A) face distal de caninos, (B) face mesial de primeiros molares, e (C) face distal de segundos molares. Resultado: As bases das próteses demonstraram melhor adaptação quando polimerizadas no processo de uma etapa, tanto superiores (p<0,05) quanto inferiores (p<0,05), com a região A apresentando melhor adaptação que a região C. Na arcada superior uma redução na distância entre I-I foi observada na técnica de uma etapa, enquanto que na técnica de duas etapas houve redução na distância ID-MD. Na arcada inferior, na técnica de uma etapa houve redução na distância ID-MD e houve redução significativa na distância IE-M pelo método de duas etapas. Conclusão: O método de uma etapa apresentou melhores resultados para a adaptação da prótese. Ambos os métodos de confecção apresentaram alteração na movimentação de dentes.
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References
1. Santos BF, Dos Santos MB, Santos JF, Marchini L. Patient’s evaluations of complete denture therapy and their association with related variables: a pilot study. J Prosthodont. 2015 Jul;24(5):351-7. http://dx.doi.org/10.1111/jopr.12286. PMid:25864962.
2. Gaspar MG, Dos Santos MB, Dos Santos JF, Marchini L. Correlation of previous experience, patient expectation and the number of post-delivery adjustments of complete dentures with patient satisfaction in a Brazilian population. J Oral Rehabil. 2013 Aug;40(8):590-4. http://dx.doi.org/10.1111/joor.12070. PMid:23663179.
3. Da Siqueira GP, dos Santos MB, dos Santos JF, Marchini L. Patient’s expectation and satisfaction with removable dental prosthesis therapy and correlation with patient’s evaluation of the dentists. Acta Odontol Scand. 2013 Jan;71(1):210-4. http://dx.doi.org/10.3109/00016357.2012.654612. PMid:22299760.
4. Bellini D, dos Santos MB, De Paula Prisco da Cunha V, Marchini L. Patients’ expectations and satisfaction of complete denture therapy and correlation with locus of control. J Oral Rehabil. 2009 Sep;36(9):682-6. http://dx.doi.org/10.1111/j.1365-2842.2009.01967.x. PMid:19508351.
5. Jo A, Kanazawa M, Sato Y, Iwaki M, Akiba N, Minakuchi S. A randomized controlled trial of the different impression methods for the complete denture fabrication: patient reported outcomes. J Dent. 2015 Aug;43(8):989-96. http://dx.doi.org/10.1016/j.jdent.2015.05.007. PMid:26051546.
6. Emami E, Heydecke G, Rompré PH, de Grandmont P, Feine JS. Impact of implant support for mandibular dentures on satisfaction, oral and general health-related quality of life: a meta-analysis of randomized-controlled trials. Clin Oral Implants Res. 2009 Jun;20(6):533-44. http://dx.doi.org/10.1111/j.1600-0501.2008.01693.x. PMid:19515032.
7. Da Cunha MC, Santos JF, Santos MB, Marchini L. Patients’ expectation before and satisfaction after full-arch fixed implant-prosthesis rehabilitation. J Oral Implantol. 2015 Jun;41(3):235-9. http://dx.doi.org/10.1563/AAID-JOI-D-12-00134. PMid:23614813.
8. Boven GC, Raghoebar GM, Vissink A, Meijer HJ. Improving masticatory performance, bite force, nutritional state and patient’s satisfaction with implant overdentures: a systematic review of the literature. J Oral Rehabil. 2015 Mar;42(3):220-33. http://dx.doi.org/10.1111/joor.12241. PMid:25307515.
9. Douglass CW, Shih A, Ostry L. Will there be a need for complete dentures in the United States in 2020? J Prosthet Dent. 2002 Jan;87(1):5-8. http://dx.doi.org/10.1067/mpr.2002.121203. PMid:11807476.
10. Artopoulos A, Juszczyk AS, Rodriguez JM, Clark RK, Radford DR. Three-dimensional processing deformation of three denture base materials. J Prosthet Dent. 2013 Dec;110(6):481-7. http://dx.doi.org/10.1016/j.prosdent.2013.07.005. PMid:24189112.
11. Gharechahi J, Asadzadeh N, Shahabian F, Gharechahi M. Dimensional changes of acrylic resin denture bases: conventional versus injection-molding technique. J Dent (Tehran). 2014 Jul;11(4):398-405. PMid:25584050.
12. Parvizi A, Lindquist T, Schneider R, Williamson D, Boyer D, Dawson DV. Comparison of the dimensional accuracy of injection-molded denture base materials to that of conventional pressure-pack acrylic resin. J Prosthodont. 2004 Jun;13(2):83-9. http://dx.doi.org/10.1111/j.1532-849X.2004.04014.x. PMid:15210003.
13. Negreiros WA, Consani RLX, Mesquita MF, Consani S, Valentino TA. Effect of the flask contention method on the displacement of maxillary denture teeth. Braz J Oral Sci. 2008 Jan-Mar;7(24):1493-6.
14. Dos Santos MB, Consani RL, Mesquita MF. Influence of different metal flask systems on tooth displacement in complete upper dentures. Gerodontology. 2012 Mar;29(1):30-5. http://dx.doi.org/10.1111/j.1741-2358.2010.00392.x. PMid:20561061.
15. Caetano CR, Consani RL, Bacchi A, Correr AB, Dos Santos MB. Influence of different flask systems on tooth displacement and framework misfit in mandibular fixed implant-supported complete dentures. J Prosthodont Res. 2013 Jul;57(3):213-8. http://dx.doi.org/10.1016/j.jpor.2013.04.001. PMid:23773375.
16. Jethlia H, Jethlia A, Naveen Raj P, Meshram A, Sharma N. Post insertion problems and their management in complete denture. J Evol Med Dent Sci. 2013 Jan;2(3):194-9. http://dx.doi.org/10.14260/jemds/243.
17. Sykora O, Sutow EJ. Posterior palatal seal adaptation: influence of processing technique, palate shape and immersion. J Oral Rehabil. 1993 Jan;20(1):19-31. http://dx.doi.org/10.1111/j.1365-2842.1993.tb01511.x. PMid:8429420.
18. Wong DM, Cheng LY, Chow TW, Clark RK. Effect of processing method on the dimensional accuracy and water sorption of acrylic resin dentures. J Prosthet Dent. 1999 Mar;81(3):300-4. http://dx.doi.org/10.1016/S0022-3913(99)70273-8. PMid:10050118.
19. Matsuo H, Suenaga H, Takahashi M, Suzuki O, Sasaki K, Takahashi N. Deterioration of polymethyl methacrylate dentures in the oral cavity. Dent Mater J. 2015;34(2):234-9. http://dx.doi.org/10.4012/dmj.2014-089. PMid:25740307.
20. Langer A. The validity of maxillomandibular records made with trial and processed acrylic resin bases. J Prosthet Dent. 1981 Mar;45(3):253-8. http://dx.doi.org/10.1016/0022-3913(81)90385-1. PMid:6938670.
21. Telles D, Hollweg H, Castellucci L. Conventional and implant-supported complete dentures. Sao Paulo: Ed. Santos; 2009. 492 p. In Portuguese.
22. Prisco V, Marchini L. Contemporary complete dentures in the oral rehabilitation. Sao Paulo: Ed. Santos; 2007. 277 p. In Portuguese.
23. Consani RL, Domitti SS, Mesquita MF, Consani S. Influence of flask closure and flask cooling methods on tooth movement in maxillary dentures. J Prosthodont. 2006 Jul-Aug;15(4):229-34. http://dx.doi.org/10.1111/j.1532-849X.2006.00111.x. PMid:16827735.
24. Consani RL, Domitti SS, Barbosa CMR, Consani S. Effect of commercial acrylic resins on dimensional accuracy of the maxillary denture base. Braz Dent J. 2002;13(1):57-60. PMid:11870965.
25. Anusavice KJ. Phillips’ dental materials. 11th ed. Rio de Janeiro: Elsevier; 2013.
26. Chen JC, Lacefield WR, Castleberry DJ. Effect of denture thickness and curing cycle on the dimensional stability of acrylic resin denture bases. Dent Mater. 1988 Feb;4(1):20-4. http://dx.doi.org/10.1016/S0109-5641(88)80083-6. PMid:3077126.
27. Baydas S, Bayindir F, Akyil MS. Effect of processing variables (different compression packing processes and investment material types) and time on the dimensional accuracy of polymethyl methacrylate denture bases. Dent Mater J. 2003 Jun;22(2):206-13. http://dx.doi.org/10.4012/dmj.22.206. PMid:12873123.
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