What is one of the most common errors in dental preparation?

Overtapering is a common error in dental preparation, especially in the context of creating space for crowns or other restorations. This mistake occurs when the tapering of the tooth preparation is excessive, which can compromise the retention and stability of the final restoration. Proper tapering is crucial because it allows the restoration to sit securely on the prepared tooth while providing adequate surface area for bonding. When the taper is too steep or excessive, it decreases the frictional resistance that helps keep the restoration in place, making it more likely to dislodge or fail over time.

Retaining the right balance in tooth preparation is essential for ensuring longevity and functionality of dental restorations. Thus, overtapering not only leads to a poorly fitting restoration but can also negatively impact the health of the tooth underneath by affecting its structural integrity.