Buccal surfaces

Ambient air entering tbe oral cavity during oral breathing confronts a variety of surface structures. Inspired air initially passes between highly vascular lips and across the teeth, w hich can be viewed as a series of heat transfer fins. The tongue and buccal surfaces (both rough, highly vascular... 

Bacterial catabolism of oral food residue is probably responsible for a higher [NHj] in the oral cavity than in the rest of the respiratory tract.Ammonia, the by-product of oral bacterial protein catabolism and subsequent ureolysis, desorbs from the fluid lining the oral cavity to the airstream.. Saliva, gingival crevicular fluids, and dental plaque supply urea to oral bacteria and may themselves be sites of bacterial NH3 production, based on the presence of urease in each of these materials.Consequently, oral cavity fNTi3)4 is controlled by factors that influence bacterial protein catabolism and ureolysis. Such factors may include the pH of the surface lining fluid, bacterial nutrient sources (food residue on teeth or on buccal surfaces), saliva production, saliva pH, and the effects of oral surface temperature on bacterial metabolism and wall blood flow. The role of teeth, as structures that facilitate bacterial colonization and food entrapment, in augmenting [NH3J4 is unknown. 

Buccal Pertaining to or directed toward the cheek. In dental anatomy, used to refer to the buccal surface of a tooth. [EU]... 

Fig. 9.14. Buccal surface of human molar tooth. Rayleigh velocity and attenuation measured using a line-focus-beam lens at 225 MHz. The sketches indicate the approximate measurement angles at which the Rayleigh wave propagation was in the direction of the arrows... 

A similar approach has been described by Murray et al. [42] using denture wearers, where indentations were placed within a small flat area which was ground on the buccal surface of the mesial cusp of the lower right first molar tooth of each denture. The subjects brushed twice daily with a test product and assessments were made at 1 and 6 months. The assessments involved examining... 

To make the white spot lesions, human premolars were coated with nail polish except for a 5-mm square on their buccal surfaces. This ensured that demineralization always occurred at a specific location. The samples were then immersed in 200 ml methyl cellulose gel with 200 ml lactic acid solution (pH 4.6) poured on top, but separated by a sheet of filter paper. The teeth were stored in this solution at 3 7°C for 14 days to allow the lesions to develop. After removal from the gel, the teeth were washed and sectioned through the center of the lesions to enable the cross-section of each lesion to be viewed. The two cross-sections created for each lesion were then mounted in a low temperature cure epoxy and polished to an optical finish using 1/4-micron grit (diamond paste). 

Nursing bottle caries (Fig.6) is a specific form of rampant decay on the buccal surface of the upper anterior primary teeth. Some etiological factors, such as the types of microorganisms, tooth structure, and diet, have been reported, but there is little information about the influence of the salivary flow rate. 

Oral clearance on the buccal surface of the upper molar region... 

In conclusion, the degree of individual variation in the location of the p>arotid duct orifice is great and its exact location will markedly affect oral clearance at different positions on the buccal surfaces of the upper molars. 

Salivary clearance rates in different parts of the mouth are known to vary. The clearance half-times on the buccal surfaces of the upper anterior teeth were the longest of any site in the mouth. These show that the saliva secreted into the oral cavity is not perfectly mixed. Weatherell et al (1986) reports the difference by the fluoride distribution in the mouth after fluoride rinsing. Duckworth and Morgan (1991) and Heath et al. (2001) have also reported oral fluoride retention after use of fluoride rinse. These researches demonstrate the mechanism of the salivary clearance reported by Dawes (1983). According to Lear et al (1965), the salivary flow rate in the sleep is almost similar to the zero, but there are few reports the clearance of the fluoride in the sleep. 

In this study it was shown that the fluoride concentration in the saliva was kept at high level for a long time during sleeping. In order to prevent dental caries at the buccal surfaces of the upper anterior teeth, it seems to be good to use a fluoride rinse before going to bed. 

Non-carious cervical lesions of the tooth are typically wedge-shaped and show loss of tooth tissue mainly on the buccal surfaces of the tooth close to the cemento-enamel junction. This is the case, regardless of the tooth affected [72]. When the tooth is loaded asymmetrically, there are typically flexing stresses, and these produce tension on one side of the tooth and compression on the other. Both types of force are located close to the cemento-enamel junction [86], The result is that tooth mineral fractures in this region, and falls away, causing a non-carious lesion to develop. These lesions typically involve exposure of the dentine [72]. 

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