Class I&II Cavity Preparation for Composite Restoration

What is the purpose of preoperative wedging in the gingival embrassure and bitine rings for Class II direct composite restorations?

What type of tooth preparation design is indicated when only the proximal surface is defective, without any lesions on the occlusal surface?

What is the purpose of the proximal extensions prepared using another instrument with straight sides in a scooped-out appearance prep?

What type of tooth preparation design resembles a more traditional Class II amalgam tooth preparation for moderate to large Class II direct composite restorations?

Why is it contraindicated to use occlusal cavosurface margin bevel in Class II direct composite restorations?

What is the purpose of placing conservative bevels in Class II direct composite restorations?

What is the advantage of using an inverse or internal bevel at the gingival margins in Class II direct composite restorations?

Why is it important to extend the diamond over the DEJ with the tip positioned to create a gingival directed cut inside the DEJ in Class II direct composite restorations?

Why is it not required to extend the proximal box beyond contact with the adjacent tooth in Class II direct composite restorations?

What does holding the diamond over the DEJ with a slightly convex arc outward aim to achieve in Class II direct composite restorations?

Why is it important to maintain enamel margins at the gingival margin during Class II direct composite restorations?

What is indicated if an external cavosurface margin forms a right angle with the tooth surface during Class II direct composite restorations?

What is not required for strength in composite restorations, unlike in amalgam?

According to the clinical tip, what is unnecessary for the removal of a slightly undermined tooth?

Which type of caries is unnecessary for a Mesio-occlusal (MO) Class II direct composite restoration, according to the clinical tip?

In the context of composite restorations, what reinforces tooth structure, including enamel?

What does not require bulk for strength in composite restorations, as does amalgam?

What type of restoration is unnecessary for the removal of a slightly undermined tooth, according to the clinical tip?

What relies on adhesive instead of requiring mechanical retention in composite restorations?

What is unnecessary for a Mesio-occlusal (MO) Class II direct composite restoration, according to the clinical tip?

What reinforces tooth structure, including enamel, in the context of composite restorations?

What does not require bulk for strength in composite restorations, as does amalgam?

Which of the following is NOT one of the objectives of cavity preparation for direct posterior composites?

What type of preparations are required for small to moderate Class I direct composite restorations?

In moderate to large Class I direct composite restorations, what areas should be preserved as much as possible?

What provides the retention in tooth preparation for direct posterior composites?

Which type of bur is typically used for preparing small to moderate Class I direct composite restorations?

What is the appearance of preparations required for small to moderate Class I direct composite restorations?

What form should be followed in moderate to large Class I direct composite restorations?

Which of the following should be preserved as much as possible in moderate to large Class I direct composite restorations?

What is retained by bonding in tooth preparation for direct posterior composites?

What type of feature is NOT necessary in tooth preparation for direct posterior composites due to the use of bonding?