Influence of denture surface roughness and host factors on dental calculi formation on dentures: a cross-sectional study

Abstract

BackgroundDental calculi formation on dentures can worsen the oral cavity environment by complicating oral hygiene. However, few studies have investigated the effect of how patients use and manage their dentures, denture surface roughness, and host factors such as oral cavity dryness and saliva properties on denture cleanliness and denture dental calculi formation. Accordingly, we conducted the present survey to evaluate these factors to clarify the strength of the influence of each factor.MethodsWe enrolled 53 patients who had used dentures for at least 3 months and used a dental prosthesis that covered at least the six front teeth including the left and right mandibular canines. After staining the dentures, we divided the participants into a group that was positive for dental calculi (DCP group) and a group that was negative for dental calculi (DCN group). After removing all the stains, we evaluated the surface roughness of the dentures. A questionnaire was used to survey how the participants used and managed their dentures. Oral cavity dryness was evaluated, and resting saliva samples were collected to assess saliva properties. Correlations between the presence or absence of dental calculi and denture use and management were evaluated using a chi-square test. Correlations with denture surface roughness, oral cavity dryness, and saliva properties were evaluated using the Mann–Whitney U test. Correlations between the presence or absence of dental calculi and all factors were analyzed using multivariate analysis (quantification II).ResultsSurface roughness was significantly greater in the DCP group (p < 0.01), and the DCP group members wore their dentures during sleep significantly more often and used a denture cleaner when storing their dentures significantly less often (both p < 0.01). No significant differences were observed for oral cavity dryness or saliva properties. The multivariate analysis showed significant correlations of dental calculi formation with denture surface roughness and items related to denture use and management, but not for oral cavity dryness or saliva properties.ConclusionsOur findings indicate that dental calculi formation is influenced by how dentures are used and managed and by denture surface roughness, but not by oral cavity dryness and saliva properties.

The Effects of Toothbrush Wear on the Surface Roughness and Gloss of Resin Composites with Various Types of Matrices

“…Many studies concluded that toothbrushing significantly increases surface roughness [ 24 , 27 ] and any surface roughness above a threshold of 0.2 μm increases bacteria retention [ 29 ]. Therefore, the surface of a restoration is of considerable importance because it affects the function of a tooth through wear, abrasiveness, and build-up of plaque and calculus [ 30 ]. A smoother restoration has a better wear resistance and marginal integrity thus increasing the life of the restoration and the oral health of the patient [ 4 ].…”

Effect of Educational Progressive Web Application on Patient’s Oral and Denture Knowledge and Hygiene: A Randomised Controlled Trial

“…Some differences may exist amongst the RPDs that possibly in uenced the GI scores between the PWA group and the control group. Given that the participants received their RPDs within a 2-year duration, increased surface roughness in old dentures [40] could affect cleanliness.…”

Quality of Life, Satisfaction, Occlusal Force, and Halitosis after Direct and Indirect Relining of Inferior Complete Dentures

“…14,15 This situation occurs principally because of the surface roughness of the acrylic resin, which tends to increase through time due to its low resistance to abrasion and daily brushing with dental pastes containing abrasives. [14][15][16] It is important to emphasize that the accumulation of microbial plaque on the complete denture can lead to bad breath. 12,13 The relining of a complete denture can be done in a direct manner in the clinic, or indirectly, combining the clinical and laboratorial phase.…”

“…This is important since complete dentures can accumulate and retain a microbial film over time, 12 13 worsening oral hygiene and affecting the health of patients. 14 15 This situation occurs principally because of the surface roughness of the acrylic resin, which tends to increase through time due to its low resistance to abrasion and daily brushing with dental pastes containing abrasives. 14 15 16 It is important to emphasize that the accumulation of microbial plaque on the complete denture can lead to bad breath.…”