Dentin Hypersensitivity. Occlusion of Dentinal Tubules by Brushing With and Without an Abrasive Dentifrice

Abstract

Daily toothbrushing with and without an abrasive dentifrice was performed on the ground surfaces of human cervical dentin attached to resin plates, which had been exposed to the oral cavities of 4 subjects for 8 weeks. Brushing with a dentifrice containing calcium hydrogen phosphate as an abrasive caused most of the dentinal tubules to open. The patency of dentinal tubules is thought to induce dentin hypersensitivity. Brushing without a dentifrice, on the other hand, resulted in occlusion of the dentinal tubules with organic pellicle‐containing minerals. Furthermore, abrasion did not occur; however, no bacterial plaque or dental calculus were retained. The occluded tubules which were distributed over the entire dentin surfaces will likely prevent hypersensitivity. Such organic‐mineral materials occluding the tubules can be derived from saliva and embedded by the brushing. We suggest that use of a non‐abrasive dentifrice will prevent or reduce dentin hypersensitivity in the cervical regions. J Periodontol 1994;65:291–296.

Effect of an acid diet allied to sonic toothbrushing on root dentin permeability: an in vitro study

“…These results were also found in other studies (6,13). The acid beverages that caused the highest increase in dentin permeability were lemon juice (187.83%), orange juice (148.33%), vinegar (147.16%), cola drink (139.83%) and white wine (184%).…”

“…Thus, the changes in permeability in this experiment were considered a percentage of Stage 1, using the Lp value as 100% flow permits evaluation of modifications in dentin permeability following the test treatments. Each specimen was its own control (4,6,11,12). This study showed that exposure to acidic beverages removed the smear layer surface and increased dentin permeability.…”

“…This difference probably happened due to the acid features of each beverage. Although the orange juice showed larger pH, it is the beverage that presents greater erosive capacity as shown in a study by Prati et al (6). Thus, the Canadian Advisory Board on Dentin Hypersensitivity advises the patients with risk of erosion or abrasion to brush their teeth before meals and avoid ingestion of acidic beverages.…”

Comparison of the Occluding Ability of Dentinal Tubules with Different Morphology between Calcium Phosphate Precipitation Method and Potassium Oxalate Treatment

“…In contrast, dentinal tubules were gradually obturated by precipitation of calcium and phosphate when plaque control was exercised through daily brushing or chemical removal of plaque using chlorhexidine9, 16) Therefore, the condition of plaque control markedly affected the pathology of hypersensitive dentin12) . In addition, acidic beverages remove the smear layer and open dentinal tubules17) .…”

Influência dos tratamentos dessensibilizantes associados ao laser de diodo na permeabilidade dentinária

“…Os dentes mais acometidos são os pré-molares e os sintomas estão intimamente relacionados com a recessão gengival (CHRYSANTHAKOPOULOS, 2011;YE;FENG;LI, 2012), ou seja, exposição da dentina radicular e/ou cemento. Uma vez expostos ao meio bucal, esses tecidos estão mais suscetíveis à erosão intrínseca ou extrínseca (alimentos e bebidas ácidas) e também à abrasão causada pela escovação, processos esses capazes de expor e abrir os túbulos dentinários (KUROIWA, 1994;WATSON;THOMPSON, 2010). A literatura demonstra que existe uma relação direta entre túbulos dentinários abertos, permeabilidade e hipersensibilidade dentinária, ou seja, quanto maior a permeabilidade, maior a hipersensibilidade clínica (PINTO et al, 2010).…”