[Effect of chewing sugar-free gum after sucrose challenge on dental plaque pH in situ].
OBJECTIVE
To evaluate the effect of chewing sugar-free gum after sucrose challenge on dental plaque pH in situ.


METHODS
16 healthy volunteers aged 23 - 32 years were screened as subjects. The pH of 48-hour dental plaque was measured using a Beetrode pH microelectrode when subjects chewed Extra sugar-free gum after sucrose challenge.


RESULTS
Dental plaque pH maintained at resting plaque pH when immediately chewed sugar-free gum after sucrose challenge. Chewing sugar-free gum at 5 min after sucrose challenge, dental plaque pH was raised from 5.59 (measured at 5 min after sucrose challenge) to 6.98 (measured at 10 min after sucrose challenge).


CONCLUSIONS
Chewing sugar-free gum after sucrose challenge can neutralize organic acid produced by bacteria in dental plaque and rapidly rise plaque pH.
Dong
Yan-mei
YM
Department of Operative Dentistry and Endodontics, Peking University School of Stomatology, Beijing 100081, China.
Pan
Yi-chun
YC
Wang
Dong-mei
DM
Cao
Cai-fang
CF
D000328:Adult; D002638:Chewing Gum; D003773:Dental Plaque / Q000378:metabolism / Q000517:prevention & control*; D005260:Female; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008297:Male; D013395:Sucrose
D002638:Chewing Gum; D013395:Sucrose