title: [The effect of intracoronal bleaching on cervical periodontium of dogs]
abstract: OBJECTIVE:To study the effects of two intracoronal bleaching techniques on dog's cervical periodontium.METHODS: The experimental animal modles of intracoronal bleaching were established and pathological slides were made. The histological changes of dogs' periodontium were examined by means of light micro-scope. RESULTS: A year following intracoronal bleaching,the group received thermocatalytic bleaching showed:(1)resorption of cementum or dentine;(2)ankylosis,(3)infiltratin of substantial inflamatory cells into resorption areas.The group received walking bleaching showed:(1)localized resorption of alveolar bone;(2)lacuna-shaped resorption of cementum. CONCLUSION: Whether heated or not,intracoronal bleaching with bleaching with bleaching agent including 30% hydrogen peroxide may innitiate external cervical resorption of dog's teeth.
authors.affiliation: Guanghua Hospital of Stomatology,Sun Yaten University of Medical Science. Guangzhou 510055, China.
authors.forename: X
authors.initials: X
authors.lastname: Wei
authors.forename: X
authors.initials: X
authors.lastname: Xu
authors.forename: X Y
authors.initials: XY
authors.lastname: Wang