Diastema, fractures, stained /defective restorations , discolorations /Staining of teeth - extrinsic /intrinsic ,attrition , root exposure ,erosion/abrasion of teeth ,slight malpositioning of teeth, malformation of teeth, situations where metal ceramic crowns are difficult -large adolescent pulp, mandibular incisors, occlusal limitations⁵.

The tooth reduction involved placement of multiple depth wells or horizontal grooves prepared with round diamond burs positioned so that limiting shank is laid parallel against the enamel .

Bur depth wells were placed at the gingival in the mesiodistal center, at both proximal angles. Three more were placed in the midincisogingival surface.

Incisal reduction was required as the incisal thickness was not enough to support the veneer, so a half round bur ⁹ [0.07 mm ]was used to notch the incisal edge in 3 parallel positions .

Anesthesia was required, although preparation was confined to enamel. The patient was having sensitivity as the preparation approached gingiva, enamel became thinner and tissue retraction was required to dilate the intracrevicular space to observe the CEJ and to avoid laceration of gingiva.

Gingival shamfer was placed at the height of gingival crest using a coarse tapered diamond bur. The margin was made to continue into the interproximal areas to the height of labiopalatal contours to avoid display of cement lines. Incisal preparation was modified to get incisal wrap as the incisal thickness was too thin to support the veneer. Facial surface was uniformly reduced with the fine diamond bur to the peripheral margins and labial depth guides .The preparation was progressively refined and polished to remove contour irregularities, internal line angles, and bur striations to minimize stress to thin porcelain veneer. The natural lusture was maintained so temporization was not required.

The impression was recorded using elastomeric impression [rubber base impression] material using a combination of putty and light body for the reproduction of finer details.

The fabricated laminates were examined for fracture and excessive thickness. Colour accuracy was verified. The preparation and inter proximal embrasures were cleaned. Each veneer was trial seated with the help of glycerine and checked for colour, fit and placed simultaneously to check for displacement from bulky proximal contacts. Excess proximal contacts were relieved using abrasive polishing wheels. Using a neutral composite shade under the laminate color was Checked and confirmed.

The prepared tooth surface was etched using 37% phosphoric acid for 45 seconds .Enamel-dentine bonding agent was applied on the etched tooth surface.

Etching -using hydroflouric acid the under surface of laminates were etched for a minute.

The laminates were placed in a padded ultrasonic cleaner with the solution of acetone and alcohol to remove contaminates .They were then rinsed dried and arranged in left and right contralateral pairs, beginning with the centrals .A thin layer of silane coupling agent was brushed on the etched laminate surface and air dried for 1 minute, then a thin layer of light-cure enamel –dentine bonding agent was applied but not cured .

Then the laminates were uniformly loaded with low viscosity/flowable composite resin and placed on the tooth surface ready for bonding first facially then pressure was applied gingivally because of presence of lingual wrap at the incisal edge for complete seating. The excess was removed from the proximal margins while maintaining the steady finger pressure. Then the laminates were cured first for 20 seconds, then the excess composite was removed again and then the entire laminate was cured for 1.5 to 2 minutes .

Figure 1