factors affecting retention and stability of complete dentures - Piano Notes & Tutorial

by Wearers of Maxillary Complete Dentures. 2 Saliva that is ropy, viscous, or mucinous has poor cohesive and adhesive properties that prohibit optimal denture retention. Looks like you’ve clipped this slide to already. size of the denture bearing area. 16. ANATOMICAL FACTOR (DENTURE BEARING AREA). Xerostomia affects retention and can also cause irritation and soreness of the denture bearing tissues. These findings suggested that patient-driven factors, such as patients' age and denture's use habits had more … What aspect of fitting (basal) surface important in L denture? J Prosthet Dent. Download PDF View details. Stability is the prevention for denture base to move in a horizontal direction and from sliding front or back and side to side.It is more important in lower complete denture.If the ridge is higher and broader than there will be better stability. Factors in the mechanism of full denture retentionA discussion of selected. Physiological factors  The amount and consistency of saliva affects retention  Thin, watery saliva affords best retention  Excessive saliva that is thick and ropy, accumulates between tissue surface of the denture and the palate leading to loss of retention  The absence of saliva i.e. A- Size of the denture bea ring area :- Retention increases with increase in. These factors include adhesion and cohesion, viscosity and flow of saliva, the shape and degree of resorption of alveolar ridges, and the quality and quantity of alveolar bone as well as mineral density, resiliency of sof… Application of border molding procedure in the treatment of edentulous jaws (toothlessness in either jaw) increases retention and stability of the prosthesis. The theoretic basis of the functional vacuum method for complete denture construction. ABSTRACT It is very difficult to relate the anatomical sciences to clinical dentistry, but there is … … Border seal, post dam. Complete Denture Stability and Retention. How to overcome common difficulties(in brief). The factors that affect retention are – Anatomical factors like size of the denture bearing area, and quality of the denture bearing area. Factors affecting the retention of complete dentures are maximal extension of the denture base and maximal intimate contact of the denture base with its basal seat. been traditionally achieved with optimal success using conventional complete dentures. If you continue browsing the site, you agree to the use of cookies on this website. The patient’s acceptance of the finished prosthesis is dependent on various factors, among which retention and stability of the complete denture play a significant role. The clinical quality of the complete denture was classified according to conventional and CU-modified Kapur criteria. to GPT) as “The quality of a denture to be firm, steady or constant, to resist displacement by functional stresses and not to be subject to change of position when forces are applied.” Its the ability of the denture to withstand horizontally acting forces, and the various factors that affect stability of the dentureare – 1. When optimally contoured, complete dentures occupy space in the oral cavity defined by the physiologic limits of acceptable muscular function, thus acquiring stability and retention during mastication, deglutition, and phonation. 2005;94(1):10–92. Two important factors that contribute to retention of complete dentures include the establishment of an accurate and intimate fit of the denture base to the mucosa and the achievement of a proper peripheral seal. The clinical quality of the complete denture was classified according to conventional and CU-modified Kapur criteria. Retention depends upon numerous factors such as physical, physiological, psychological, mechanical, and surgical factors. Oral Exam Clinical Factors InfluencingStability, Retention, and Support of Complete Dentures 26. None of the physical factors involved in complete denture retention can be totally explained. 12. Avoiding the use of palatal relief also increases retention by decreasing the fluid film thickness. They include the following 1: Saliva quality. A most important An overdenture is a prosthesis that fits over retained roots or implants in the jaws. A contemporary review of the factors involved in complete dentures. Full extension (area) Close adaptation (saliva film) Saliva of MEDIUM viscosity, adequate volume. 3. Following this the tooth doctor must use the patient to get success in issues such as speech, mastication, esthetics and neuromascular control. 1960;10:673-681. salivary film, Under normal conditions atm pressure has no role in retention, Factors that make retention/stability difficult, - Relation to edentulous ridge, tongue, oral musculature (tongue control), Lingual overhangs- make dentures unstable. No authors listed. 2. Denture retention and stability were scored based on the Kapur method, with excellent intraobserver reliability indicated by a Kappa score of 0.91 to 0.99. However, some of them participate commonly in the intricate mechanism which is set in action at the moment of dislodgment of the denture. Central *Corresponding author. Tsubakida K, Sato Y, Kitagawa N, Nakatsu M, Kana T, et al. Highly resorbed ridges offers the least stability. Force holding 2 parallel plates together that is due to viscosity of interposed liquid (saliva) Viscous force decreases as liquid thickness increases. Establishing a balanced occlusion is key to maintaining stability and in turn the border seal. Interfacial viscous tension. R of denture to vertical movement away from tissues, R of denture to displacement by functional forces, Thin layer of fluid btwn 2 parallel planes of rigid material. Edentulous jaw is a condition where either the upper (maxilla) or the lower (mandible) jaw is missing all teeth. Other methods of trying to ensure good base fit? Hence transitional partial dentures can provide a practice period for the musculature, before complete dentures are provided. Complete denture retention is, in part, influenced by denture occlusion. FACTORS AFFECTING RETENTION OF DENTURE ANATOMICAL FACTOR (DENTURE BEARING AREA) Retention also depends on the size and quality of denture bearing area.The retention increases as the increase in size of denture bearing area.Maxillary denture bearing area is 24 sq.cm and mandibular denture bearing area is less 14 sq.cm. Factors of Retention and Stability The objectives of impression procedures are to record the denture bearing tissues in that condition which will best support and retain the dentures. Factors involved in complete dentures •Retention – resistance to vertical dislodging forces •Complete denture retention is, in part, influenced by denture occlusion. Trauma. Fish believed that the contours of the polished surfaces provide the principal factors governing the complete denture stability. Unacceptable complete denture retention and stability are substantial risk factors for impaired OHRQoL in complete edentulism. The physical-chemical mechanism of retention of dentures is a highly complex one. Retention,stability& support in dentures / dental implant courses by Indian d... Principles of support stability and retention in complete dentures, No public clipboards found for this slide. Kensuke Tsubakida, Department of Geriatric Dentistry, School of Dentistry, Showa University, 2-1-1 Kitasenzoku, Retention is the resistance of the denture to removal along its path of insertion. and mandibular area is 14 sq.cm. (2017) Factors Affecting the Selection of Denture Adhesive or Oral Moisturizers . 71,72 Conversely, poorly designed prostheses that do not accommodate anticipated muscular function may yield compromised denture stability and reduced retention.

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