Universal Curette and its Indication and Function - Universal curettes have sharp cutting edges on both sides of their blades. - Only two instruments are necessary – anterior (pink ring) and posterior (purple ring). - Used for periodontal scaling, calculus debridement, and root planing. - Can be used both supragingivally and subgingivally. - Indicated for nonsurgical periodontal therapy. - Helps eliminate inflammation and return the periodontium back to health. - Controls bacterial levels in the mouth. - Oral health education is provided to control calculus and plaque buildup.

Design Characteristics of Universal Curette - Double-ended instrument with paired mirror-image working ends. - Rounded back and rounded toe with a semicircular cross-section. - Face of the instrument is at a 90-degree angle to the lower shank. - Contains two cutting edges on either side of the working end. - Shank length, design, and blade size may vary.

Types of Universal Curette - Numerous different universal curettes with slight design differences. - Columbia 13/14, Barnhardt 5/6, and Younger Good 7/8 curettes have shorter lower shanks. - Columbia 4R/4L, Columbia 2R/2L, and Barnhardt 1/2 instruments have longer lower shanks. - 10/11 Loma Linda and R 144 Queen of Hearts have longer lower shanks with blade designs for line angles. - Recommended indication of use varies based on pocket depths and tooth surfaces.

Technique for Using Universal Curette - Proper positioning of patient and operator is important. - Modified-pen grasp is used to operate the instrument. - Pressure is applied with index finger and thumb on the instrument handle. - Working-end is adapted to the crown or root surface at a 70-80 degree angle. - Different strokes are used based on the tooth surface being addressed.

Advantages and Limitations of Periodontal Curettes - Periodontal curettes are finer than sickle scalers and do not have sharp points or corners, minimizing soft tissue trauma. - Curettes can be adapted around the tooth surface, providing better access to deep pockets. - Gracey curettes are ideal for subgingival scaling and root planing due to their design. - Sickle scalers are primarily used for supragingival calculus removal. - Sickle scalers have a stronger tip that is less likely to break off during use.