In this study, two loading conditions were tested on each FE model: a vertical load on the incisal edge
of the midline to simulate vertical loading while biting and lingual loading from the labial surface of the teeth to simulate protrusive jaw movement during mastication.
Many studies that had been carried out to in the past, found that the lingual frenum is a stable landmark for recording accurate occlusal vertical dimension.10-13 The aim of the present study was to evaluate the reliability of the measurement of the distance between the anterior attachment of the lingual frenum and the incisal edge
of the mandibular central incisor in the Pakistani population.
All lower incisors displayed evidence of incisal edge
These factors may include discolorations of teeth, discoloration of a single tooth and chipping of incisal edges
. It was therefore, the objective of this research to study the effect of above mentioned alteration on smiles as perceived by dentists and non-dentists.
The midline, incisal edge
position, occlusal plane, buccal lip support, and anterior segment were indicated on the acrylic maxillary base and wax rim.
In maxillary left central incisor the fracture line enrooted from the center of incisal edge
through the pulp chamber extending beyond the cervical line into the sub gingival area.
Caption: Figure 3: (a) Intraoral photograph after three cycles of internal bleaching of tooth 11 (July 2013) shows that the color was brighter than that of adjacent teeth (b) The incisal edge
of tooth 11 was slightly reduced to minimize loading (arrow) (June 2015).
In order to minimize metal-show-through, the incisal-finishing-line was prepared 2 mm short of the incisal edge
, so that the incisal-edge-translucency was preserved from the facial aspect.
reattachment: Indications for use and clinical technique.
Then, every milled block was layered with a nanofluorapatite ceramic for the final incisal edge
optics (IPS e.max Ceram, Ivoclar Vivadent, Liechtenstein, Germany) (Figure 12).
Clinically fused anterior teeth frequently have a groove or notch on the incisal edge
that goes in buccolingual direction and radiographically, the dentin of fused teeth always appears to be joined in some region with separate pulp chambers and canals.
On clinical examination, maxillary right central incisor showed complicated crown-root fracture extending from the center of the incisal edge
going up to and beyond the cervical line subgingivally.