Erschienen:
[Erscheinungsort nicht ermittelbar]: The University of Hong Kong (Pokfulam, Hong Kong), 2016
Sprache:
Englisch
Identifikator:
Entstehung:
Hochschulschrift:
Dissertation, The University of Hong Kong (Pokfulam, Hong Kong), 2016
Anmerkungen:
Beschreibung:
Introduction: Silver diammine fluoride (SDF) has been found to be effective in preventing and in arresting dental caries in primary teeth. Clinical evidence to support its use for managing dental root caries in elders is limited. Besides, no clinical study has been conducted to reduce the staining caused by SDF on the arrested caries lesions. Objectives: This study aimed to investigate the effectiveness of SDF in preventing and in arresting dental root caries in elders and to assess the effects of applying potassium iodide (KI) after SDF application on the color of arrested root caries lesions. Methods: This study was conducted among community-dwelling elders in Hong Kong. Elders who had at least 5 teeth with exposed root surfaces were randomly allocated into three intervention groups as follows: Group 1 – received oral hygiene instruction (OHI) and soda water (placebo control); Group 2 – received OHI and annual application of SDF solution; and Group 3 – received OHI and annual application of SDF solution followed immediately by KI solution. Status of the dental root surfaces was assessed clinically every 6 months by the same independent examiner. Color of the arrested root caries lesion was assessed using PANTONE color sheets. Results: A total of 323 elders (mean age=72.1) with 13499 sound exposed root surfaces were examined at baseline. Among them, 257 (79.6%) were followed for 30 months. The mean numbers of dental root surface with new caries found at the 30-month examination in Groups 1, 2, and 3 were 1.1, 0.4, and 0.6 respectively (ANOVA, p0.05). Conclusions: Annual topical application of either SDF solution or SDF/KI solution is effective in preventing and in arresting dental root caries among community-dwelling elders. The application of KI solution does not affect the effectiveness of SDF solution and also does not reduce the black staining caused by SDF solution. ; published_or_final_version ; Dentistry ; Doctoral ; Doctor of Philosophy