No abstract

No abstract

No abstract

A s early :is 1879, Brocn proposed :I systeni for recording attri-(1 = no attrition 1 = attrition of the enamel only 2 = one or several islets of dentine visible, surrounded by enainel 3 = dentine visible on the whole occlusal surface i"1,'usure ;I produit uiie section coiiiplL:te de tout le fGt de 1:i dent.") 4 = the whole crown is \ w r n d o \ \ 7 1 1 :I$ far :is the neck. In his "I.echrbuc*h der AnthroyologiP" ,Il/rrfin (1928) used the Goldstein (1932 ) applied Hrdlickrr's clnssification, i.e. Slight we;ir = cusps showing :I mere sign of :ittrition hlodernte \\ear = dentine beginning to show Mediuni \ve:ir = dentine visible on the gre:iter p r t oC occlus:il hfarlted we:~r = :ill en:iniel on occlusal surface of tooth gone. I,ti!qh (1925) suggested the following c1ussific:ition; 1. Attrition of enamel of the cusps 2. Partial cuposure of the dentine 3. 'Tooth conrit1er;iblg reduced, with dentine Lisihle on t h c whole surface tion. His classification was the following; s;iiiie classificntion.sl1rf:Ice of toolh. l'llll) es]"'sed. I)civiesc t Pcdersrn ( 195.5) used :I soiiiew1i:rt simpler cl:i$si-0 = n o attrition 1 = iittrition of the en:iinel 2 = dentine yisihle 3 = exposure of the wcoiit1:iry tlentinc. fica tion, viz. Porpofie The 1)iirpose o l the prewnt investigation x i s ( A to c:irry out i i qi1:ilit:itive study of the attrition, and (13) to determine t h e iiiesio-dist:il decrease in tooth dimension produced by attrition and the ensuing tooth ~nigixtion if any. 'I'll e (1 ii e s t i o 11 s tle :i 1 t with :ire the f ol I owi n g ; Acta Odontol Scand Downloaded from informahealthcare.com by Queen's University on 01/05/15 For personal use only. t "0 ' X c t t Acta Odontol Scand Downloaded from informahealthcare.com by Queen's University on 01/05/15For personal use only.

No abstract