CARIES Initiation of caries require 4 entities- Host, bacteria, time, crabohydrates Proximal caries confined within enamel – no fillimg neede only prevention Only enamel caries and not extending DEJ then :-No Rx required in surface caries. - Only preventive Rx - oral hygiene,wait and watch - Because enamel can remineralize Most important factor in increased caries rate in old ppl – Xerostomia V-shaped cervical liesion – doesn’t require any preparation for gic filling Incipient careies detected by – fibroptic light The percentage of simple caries located in the outer wall of the dentin (proximal sides of the tooth) which left without cavitations is around - 60%. Ultra-Sonic. Devices:magnet. : 25000-40000 RPM, but piezo speed is: 60000 – 80000 RPM. CMCP contains phenol in concentration: Chlorophenol 35%, Camphor 65%.

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