Influence of adaptation of removable partial denture on masticatory performance.

Jorge Nakouzi, Fabiola Villegas, Patricio Vildósola


Objective: To compare the masticatory performance (MP) of patients with old removable partial denture (RPD), recently inserted RPD and already adapted RPD by means of the simple mixing ability test. Material and Methods: Twenty-nine adult (>18 years old) volunteer patients were recruited, with lower and upper RPD, excluding total edentulous subjects in the upper and lower jaw, with temporomandibular disorders, severe periodontal disease, mental disability or systemic disease compromising the masticatory or nervous system. Prostheses were designed and fabricated by an expert operator. MP was evaluated in old RPD (MP1), recently inserted RPD (MP2) and adapted RPD (MP3). The mixing ability test used was Edlund-Lamm in percentage of MP, using Optosil® Comfort condensation silicone tablets, with standard sizes (5.0 x 20mm). In each phase, the patient chewed the tablet with 20 masticatory strokes. The crushed fragments were dried at 80°C for 60 minutes and weighed on an analytical scale. A multiple vibration sieve analysis was performed, using sieves with opening sizes of 2.8mm and 1.4mm. Shapiro-Wilk test and Anova test with Bonferroni correction were performed. Results: It was observed that MP1 presented a mean of 8.40% (SD±5.59), MP2 a mean of 8.56% (SD±5.56), and MP3 a mean of 18.26% (SD±8.12). There was a significant difference (p<0.05) between the MP1-MP3 groups, as well as between the MP2-MP3 (p<0.05). Conclusion: There is a significant increase in MP thirty days after the insertion of RPD, checkups, and adjustments performed by the dentist.


Dental prosthesis; Removable partial denture; Mastication.


Petersen PE, Yamamoto T. Improving the oral health of older people: the approach of the WHO Global Oral Health Programme. Community Dent Oral Epidemiol. 2005;33(2):81–92.

Gil-Montoya JA, de Mello AL, Barrios R, Gonzalez-Moles MA, Bravo M. Oral health in the elderly patient and its impact on general well-being: a nonsystematic review. Clin Interv Aging. 2015;10:461–7.

Ríos-Erazo M, Borges-Yañez SA. Psychological factors and his influence in the oral health of older people: A narrative review. J Oral Res. 2016;5(1):43–9.

Elsig F, Schimmel M, Duvernay E, Giannelli SV, Graf CE, Carlier S, Herrmann FR, Michel JP, Gold G, Zekry D, Müller F. Tooth loss, chewing efficiency and cognitive impairment in geriatric patients. Gerodontology. 2015;32(2):149–56.

Nguyen TC, Witter DJ, Bronkhorst EM, Gerritsen AE, Creugers NH. Chewing ability and dental functional status. Int J Prosthodont. 2011;24(5):428–36.

Lexomboon D, Trulsson M, Wårdh I, Parker MG. Chewing ability and tooth loss: association with cognitive impairment in an elderly population study. J Am Geriatr Soc. 2012;60(10):1951–6.

Xie Q, Ding T, Yang G. Rehabilitation of oral function with removable dentures--still an option? J Oral Rehabil. 2015;42(3):234–42.

Arce-Tumbay J, Sanchez-Ayala A, Sotto-Maior BS, Senna PM, Campanha NH. Mastication in subjects with extremely shortened dental arches rehabilitated with removable partial dentures. Int J Prosthodont. 2011;24(6):517–9.

van der Bilt A, Fontijn-Tekamp FA. Comparison of single and multiple sieve methods for the determination of masticatory performance. Arch Oral Biol. 2004;49(3):193–8.

Salazar MS, Gonçalves J, Rocha MD, Uemura SE, Borges SA, Silva FJ. Eficiencia masticatoria en portadores de prótesis parcial removible. Rev Estomatol Herediana. 2006;16:93–7.

Benso B, Kovalik AC, Jorge JH, Campanha NH. Failures in the rehabilitation treatment with removable partial dentures. Acta Odontol Scand. 2013;71(6):1351–5.

Asakawa A, Fueki K, Ohyama T. Detection of improvement in the masticatory function from old to new removable partial dentures using mixing ability test. J Oral Rehabil. 2005;32(9):629–34.

Edlund J, Lamm CJ. Masticatory efficiency. J Oral Rehabil. 1980;7(2):123–30.

Bessadet M, Nicolas E, Sochat M, Hennequin M, Veyrune JL. Impact of removable partial denture prosthesis on chewing efficiency. J Appl Oral Sci. 2013;21(5):392–6.

Pereira LJ, van der Bilt A. The influence of oral processing, food perception and social aspects on food consumption: a review. J Oral Rehabil. 2016;43(8):630–48.

Garrett NR, Kapur KK, Perez P. Effects of improvements of poorly fitting dentures and new dentures on patient satisfaction. J Prosthet Dent. 1996;76(4):403–13.

Unell L, Johansson A, Ekbäck G, Ordell S, Carlsson GE. Dental status and self-assessed chewing ability in 70- and 80-year-old subjects in Sweden. J Oral Rehabil. 2015;42(9):693–700.

Murai S, Matsuda K, Ikebe K, Enoki K, Hatta K, Fujiwara K, Maeda Y. A field survey of the partially edentate elderly: Investigation of factors related to the usage rate of removable partial dentures. J Oral Rehabil. 2015;42(11):828–32.

Singh KA, Brennan DS. Chewing disability in older adults attributable to tooth loss and other oral conditions. Gerodontology. 2012;29(2):106–10.

Zhang Q, Witter DJ, Bronkhorst EM, Creugers NH. Chewing ability in an urban and rural population over 40 years in Shandong Province, China. Clin Oral Investig. 2013;17(5):1425–35.

Naka O, Anastassiadou V, Pissiotis A. Association between functional tooth units and chewing ability in older adults: a systematic review. Gerodontology. 2014;31(3):166–77.

Eberhard L, Schneider S, Eiffler C, Kappel S, Giannakopoulos NN. Particle size distributions determined by optical scanning and by sieving in the assessment of masticatory performance of complete denture wearers. Clin Oral Investig. 2015;19(2):429–36.

Liang S, Zhang Q, Witter DJ, Wang Y, Creugers NH. Effects of removable dental prostheses on masticatory performance of subjects with shortened dental arches: A systematic review. J Dent. 2015;43(10):1185–94.

van der Bilt A. Assessment of mastication with implications for oral rehabilitation: a review. J Oral Rehabil. 2011;38(10):754–80.

Sánchez-Ayala A, Vilanova LSR, Costa MA, Farias-Neto A. Reproducibility of a silicone-based test food to masticatory performance evaluation by different sieve methods. Braz Oral Res. 2014;28(1):1–8.

van der Glas HW, Al-Ibrahim A, Lyons MF. A stable artificial test food suitable for labeling to quantify selection and breakage in subjects with impaired chewing ability. J Texture Stud. 2012;43(4):287–98.

Olthoff LW, van der Bilt A, Bosman F, Kleizen HH. Distribution of particle sizes in food comminuted by human mastication. Arch Oral Biol. 1984;29(11):899–903.

León S, Bravo-Cavicchioli D, Correa-Beltrán G, Giacaman RA. Validation of the Spanish version of the Oral Health Impact Profile (OHIP-14Sp) in elderly Chileans. BMC Oral Health. 2014;14:95.

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