For a primary molar with un-resorbed roots surrounding a permanent tooth bud, which extraction technique is advised?

In cases where a primary molar has un-resorbed roots surrounding a permanent tooth bud, sectioning the primary molar vertically and removing each root separately is the advised technique. This method allows for precise and careful extraction, reducing the risk of damaging the underlying permanent tooth bud. By sectioning the tooth, the operator can minimize trauma to the surrounding tissues and ensure the preservation of the permanent tooth's space and integrity.

Additionally, when the roots of a primary molar are still intact and closely associated with the developing permanent tooth, extracting the entire tooth at once could potentially exert pressure or cause displacement of the permanent tooth bud, resulting in complications for its eruption. Using a curved elevator might be insufficient when dealing with the un-resorbed roots, and simply waiting for the permanent tooth to erupt may not be practical if the primary tooth is causing issues or is at risk of infection. Therefore, the technique of sectioning emphasizes both safety and effectiveness in managing this dental situation.