Plaque control

Studies have shown that compliance with toothbmshing would be severely impaired if the bmshing regimen did not include dentifrices. Thus, the role of dentifrices in plaque control is to enhance the toothbmshing experience and thereby enhance the results. Dentifrices have tittle direct effect on plaque removal or accumulation unless they contain agents that have specific antiplaque properties. 

Surface-Chemical Aspects of Chlorhexidine in Plaque Control... 

Chlorhexidine has been used as an adjuvant for plaque control and in the treatment of gingival inflammation. It is generally considered to be effective in the control of plaque and can be helpful in the treatment of gingivitis. It can be applied in the form of a solution, used as a mouth rinse or with a toothbrush, in dentifrice or as a gel. The concentrations used are 0.05-2%. 

Solheim H, Eriksen HM, Norbo H Chemical plaque control and extrinsic discolouration of the teeth. Acta Odontol Scand 1980 38 303-309. 

Eriksen HM, Nordbo H, Kantanen H, Ellingsen JE Chemical plaque control and extrinsic tooth discolouration. A review of possible mechanisms. J Clin Periodontol 1985 12 345-350. 

Clinical evaluation in dental plaque control U. P. Saxer el aL. J. Clin. Periodontol. 9, 162 (1982). In vitro anti -bacterial spectrum M. Cortat. P. Fels. Anneimittel-Forsch. 37, 463 (1987). Clinical evaluation in pharyngeal infections M. A. Weibel et aL. ibid. 467. 

Uses Preservative in cosmetics medical disinfectant, antiseptic for gingivitis and plaque control... 

Polefka, in a patent assigned to Colgate, utilized cocamidopropyl betaine as a cationic-compatible surfactant in the preparation of another anti-plaque composition utilizing bisbiguanide as an antimicrobial active (115). Similar plaque control claims are made by Michaels, who describes a composition based on a blend of Cio-Cig alkyl A-sulfobetaine and Cio-Cig alkyl A,A-dihydroxylethylamine oxide (116). 

Fig. 4. UV stabilization of 1.5-mm injection-molded polycarbonate plaques. — — Control, —0.35% CYASORB UV-5411.

Fig. 8. UV stabilization of 2-mm injection-molded polypropylene plaques. Control, 0.3% Tinuvin 770, 0.3% Chimassorb 944, 0.15% Tinuvin 770 -I- 0.15% Chimassorb 944.

S.G. Ciancio, Chemical agents plaque control, calculus reduction and treatment of dentinal hypersensitivity. Periodontal 2000,8,75-86,1995. 

Figure 35.5 (a) Factors influencing changes in plaque pH with time (b) The extent to which the site and therefore the open or closed nature of the plaque controls its pH... 

Hill and Brown [98] reported the formation of water-free, cosolvent-free ultramulsions by dispersing polydimethylsiloxanes in polyoxyalkylene surfactants. These ultramulsions combined certain characteristics of emulsions with those of microemulsions and were used in coatings for products such as antigas/ antacids, plaque-control agents, medical lubricants, polishes, etc. These ultramulsions were stable and water and solvent free. Copolymers used include Pluronic F-68, F-88, F-108, and F-127. Concentrations used were 25-90% of the formulation. 

---