Chewing efficiency and occlusal forces in PMMA, acetal and polyamide removable partial denture wearers.
نویسندگان
چکیده
PURPOSE Thermoplastic materials, such as acetal (AC) and polyamide (PA), constitute an alternative to polymethyl methacrylate (PMMA) based resins as the materials for removable partial dentures. However, none of the previous studies compared chewing efficiency and occlusal forces in the wearers of dentures made of various materials. Therefore, the aim of this study was to determine and compare the chewing efficiency and occlusal forces in PMMA, PA and AC RPDs' wearers. The hypothesis was that the type of denture base material shows a significant effect on chewing efficiency (expressed as a degree of food fragmentation) and occlusal force. METHODS The experiment included the group of 30 patients using removable partial dentures. The dentures made of PMMA, acetal and polyamide were tested in each patient. Each denture was worn for 90 days, with a random sequence of the denture manufacturing and insertion. After 7, 30 and 90 days of each denture wear, chewing efficiency coefficient was determined with the aid of a sieving method, and occlusal force was measured with a dynamometer. RESULTS The use of dentures made of PMMA or acetal was reflected by a marked increase in chewing efficiency and occlusal force. None of these parameters changed significantly with the time of denture wear. Moreover, no significant correlation was found between chewing efficiency and occlusal forces. CONCLUSIONS Denture base material exerts significant effects on the degree of food fragmentation and the level of occlusal forces. The use of dentures and clasps made of materials with lower modulus of elasticity is associated with lower chewing efficiency and lower occlusal forces.
منابع مشابه
Electromyographic evaluation of masticatory function in denture wearers in related to existing occlusal support.
The aim of this study was to clarify the relationship between partially edentulous pattern and the masticatory function in removable partial denture wearers. Eighty eight removable partial denture wearers and 7 subjects with intact dentition volunteered for this study. Using the Eichner's index, all subjects were divided into 6 groups. Electromyographic (EMG) activities of the masticatory muscl...
متن کاملBiomechanical factors related to occlusal load transfer in removable complete dentures
Owing to economic conditions, removable dentures remain popular despite the discomfort and reduced chewing efficiency experienced by most denture wearers. However, there is little evidence to confirm that the level of mucosal load exceeds the pressure pain threshold. This discrepancy stimulated us to review the current state of knowledge on the biomechanics of mastication with complete removabl...
متن کاملMetal-free Removable Partial Dentures made of a Thermoplastic Acetal Resin and Two Polyamide Resins
متن کامل
Oral Complaints and Level of Satisfaction among the Removable Denture Wearers – a Study
Prosthodontics treatments are associated with oral complaints like speech, mastication, pain, esthetics etc. Oral complaints vary among removable partial denture and complete denture wearers. The objective of this study was to investigate the common oral complaints and level of satisfaction in removable denture wearers seen to Department of Prosthodontics, Bacha Khan Medical College, Mardan. Da...
متن کاملImpact of removable partial denture prosthesis on chewing efficiency
UNLABELLED Removable partial denture prostheses are still being used for anatomic, medical and economic reasons. However, the impact on chewing parameters is poorly described. OBJECTIVES The objective of this study was to estimate the impact of removable partial denture prosthesis on masticatory parameters. MATERIAL AND METHODS Nineteen removable partial denture prosthesis (RPDP) wearers pa...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Acta of bioengineering and biomechanics
دوره 18 1 شماره
صفحات -
تاریخ انتشار 2016