Date: November 5, 2012 (Monday)
Time: 12:45 p.m. to 1:45 p.m.
Venue: Lecture Theatre II, G/F, The Prince Philip Dental Hospital

Presenter: Miss Cao Ying, PhD Candidate (12:45 p.m. to 1:15 p.m.)

Title: Regeneration of tooth microstructure by a biomimetic mineralization method

Abstract: Dental erosion is tooth surface loss caused by chemical processes without bacterial involvement. Studies reported that the prevalence of dental erosion in children and adults were up to 82% and 54%, respectively. Dental erosion is also an important cause for dentine hypersensitivity. Restorative treatment is necessary when the loss of dental tissue is substantial. Conventional treatments of tooth defect focus on repair by dental materials such as silver amalgam and composite resin. However, this invasive approach has its limitations mainly because of its damage to the remaining sound dental tissue. Researchers therefore aim to pursue non-invasive therapeutic strategies to manage this challenging problem through remineralisation of dentine and enamel. This in vitro study aims to induce enamel and dentine regeneration to manage tooth defects by using biomimetic remineralization technology.

Presenter: Miss Ito Leticia, MPhil Candidate (1:15 p.m. to 1:45 p.m.)

Title: Arresting and preventive effects of silver diamine fluoride application and Er:YAG laser irradiation against dental caries

Abstract: Clinical trials found silver diamine fluoride (SDF) is effective on preventing and arresting coronal (enamel) caries. Another clinical trial demonstrated that SDF is effective in root (dentine) caries. SDF can also inhibit mono species biofilm formation, increase the fluoride content and reduce loss of calcium and phosphates. Studies also suggest laser irritation after topical sodium fluoride application increase fluoride uptake on dental hard tissues. Current literature however found no study reporting the effect of Er:YAG laser irradiation and SDF on caries lesions. Therefore, this in vitro study aims to investigate the caries preventive and arresting effect of SDF and Er:YAG laser irradiation with cariogenic biofilm. This study investigates the caries preventive and arresting effects on human enamel and dentine.

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