This is because in cavity class V there is little or no enamel at the
cervical margin. Adhesion of composite resin to enamel was proven to be better if compared to dentin.
New inserts will be available for Mectron PIEZOSURGERYA: from tips dedicated to mini dental implants to new applications in pros- thesis related to the finishing of the
cervical margin in crown preparations.
Plaque scores were measured using the plaque-disclosing solution (basic fuchsin mouthwash) and the Turesky modification of Quigley and Hein's technique (Carranza and Newman, 1996) on a scale of 0 to 5: 0 = no plaque; 1 = separate flecks of plaque at the
cervical margin of the tooth; 2 = a thin, continuous band of plaque (up to 1 mm) at the
cervical margin; 3 = a band of plaque wider than 1 mm but covering less than one-third of the crown; 4 = plaque covering at least one-third but less than two-thirds of the crown; and 5= plaque covering two-thirds or more of the crown.
In position B, impacted tooth was between occlusal plane and
cervical margin of second molar while a tooth below
cervical margin was labeled position C.
3M ESPE describes the crowns as pre-crimped at the
cervical margin and belled for fast and easy molar or primary placement.
New inserts will be available for Mectron PIEZOSURGERyA: from tips dedicated to mini dental implants to new applications in prosthesis related to the finishing of the
cervical margin in crown preparations.
"Cervical enamel projections (CEPs) are the focal apical extension of the coronal enamel beyond the normally smooth
cervical margin on to the root of the tooth".
Except for the force concentration at the
cervical margin, the fibre reinforced post induces a stress field quite similar to that of the intact tooth.
Careful observation of large tooth revealed an indentation on the labial and palatal surface running from the incisal edge to the
cervical margin almost dividing the crown into two halves and prominent cingulum on the palatal surface (Fig 1).
This will prevent the OIL from forming and help to prevent future staining and breakdown at the
cervical margin.
Fit of zirconia all-ceramic crowns with different
cervical margin designs, before and after porcelain firing and glazing.
On clinical examination, it was found that there was a horizontal fracture line at the
cervical margin of the tooth going deep towards the palatal side.