PubMed · 2534760
The source did not provide an abstract. Follow the original record for more information.
Explore connections, maps & timelines
W B Hall. 1989. Hopeless tooth.. https://pubmed.ncbi.nlm.nih.gov/2534760/
Cite the original work for its findings. Save a collection to share your selection of sources.
KEEP EXPLORING
Explore the source record for details and available documents.
PURPOSE: To analyse the clinical effects of cracked-teeth after filling or full crown restoration. METHODS: 225 cracked-teeth were divided into two groups: the early 77 cracked-teeth and the late 144 cracked-teeth according to their clinical features and diagnosis, and then different interventions were applied, the clinical effects were recordered and analysed. RESULTS: There was a significant difference after the early 77 cracked-teeth being treated by filling or full crown rehabilitation after 3 years follow up. The treatment to the late 144 cracked-teeth was excellent after 3 years' observation with root canal therapy or pulp mummification, and finally full crown restoration. CONCLUSIONS: By diving cracked-teeth into different stages and giving corresponding treatment, the cracked-teeth can be preserved successfully.
PURPOSE: To determine if the cutting procedure utilized in producing a cavity preparation, i.e., a high speed dental handpiece or an Er:YAG laser may be a factor in initiating the formation of micro-cracks during or after preparation of the cavity and before and after placing and curing the dental composite. METHODS: Class I occlusal and Class II MOD preparations were prepared in extracted third molars using a high speed dental handpiece equipped with a coarse diamond bur or with an Er:YAG laser at 260mJ and 25Hz. Composite was placed into the cavity level with the occlusal surface and bulk cured. The extreme factors of a coarse diamond bur and bulk curing of the composite were utilized to maximize the stresses at the tooth-composite interface. The teeth were vertically sectioned, facio-lingually, and examined, along with resin replicas, under a scanning electron microscope (SEM) to look for the presence of microcracks at the composite/enamel interface and composite/dentin interface. RESULTS: SEM examination indicated that micro-cracking of the tooth structure was not significant or consistent in any of the specimens examined. This study was unable to confirm that micro-cracks form at the composite/tooth interface.