《预防口腔医学》pit and fissure.ppt

Clinical Techniques in Caries Prevention 2009-04-02 Emphasis To master: Emphasis To be familiar with: The definition、indication and treatment procedure of Preventive Resin Restoration Atraumatic Restorative Treatment To know: The basic condition of pit and fissure caries Chapter 1 Pit and Fissure Caries Basic condition The proportion of pit and fissure caries The concept of pit and fissure sealants , 1970s. The American Dental Association. Basic condition Basic condition Why pit and fissure caries take place? Basic condition Basic condition Basic condition Chapter 2 Pit and Fissure Sealant Definition Development 1967 first utilized by Cueto. “Sealing pits and fissures with an adhesive resin: it’s use in caries prevention” 1971 recognized by the American Dental Association (ADA) Research Hicks (2000). “Fluoride-releasing sealant and caries-like enamel lesion formation in vitro” Wendt (2001). “On the retention and effectiveness of fissure sealant in permanent molars after 15-20 years: a cohort study” Research Tapias-ledesma (2002). “Effectiveness of fissure sealants in child population at high risk of caries” Sealant materials Sealant Effectiveness Perfect alternative to watching pit and fissure decay The average filling expires in 10 to 12 years. Indication Sites/surfaces of teeth at great risk Tooth morphology Caries status of the occlusal surface Indication Eruption status Overall caries activity Treatment procedure Treatment procedure Cleaning the pit and fissure surface Isolation of the tooth Etching the enamel surface Rinsing and drying the tooth Applying the sealants Polymerization Evaluation of the sealant Treatment procedure Chapter 3 Preventive Resin Restoration Definition Advantages Tooth surface is conserved; Remaining pits and fissures are protected; The risk of microleakage is reduced. Indication Fissure caries that can catch an explorer. Te