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An in vitro study of various instruments for root planing
Summary
Manual instruments like curettes offer superior root planing with minimal surface ablation and smear layer formation compared to rotating instruments. However, rotating instruments show promise in difficult-to-reach areas like furcations.
Area of Science:
- Periodontology
- Biomaterials Science
- Dental Instrument Engineering
Background:
- Rotating instruments are increasingly utilized for root surface scaling and planing.
- Assessing the efficacy and impact of various root planing instruments is crucial for periodontal therapy.
- Understanding instrument-induced surface changes is vital for effective treatment outcomes.
Purpose of the Study:
- To compare the effectiveness of manual and rotating root planing instruments.
- To evaluate root surface morphology and smear layer formation after instrumentation.
- To determine the optimal instrument choice for different clinical scenarios.
Main Methods:
- In vitro study using 42 extracted human teeth.
- Root surfaces treated with two manual instruments (scaler, curette) and five rotating instruments (Desmo-Clean, Perio-Set, Viking-Set, 40-micron diamond, 15-micron diamond).
- Surface analysis via scanning electron microscopy (SEM).
Main Results:
- Manual instruments, particularly curettes, demonstrated superior root planing with minimal surface ablation and thin smear layers.
- Desmo-Clean and 15-micron diamond finisher showed the best performance among rotating instruments, nearly matching manual ones.
- Rotating instruments generally resulted in greater ablation and thicker smear layers.
Conclusions:
- Manual instruments remain the preferred choice for accessible root surfaces due to better planing and less surface alteration.
- Rotating instruments offer handling advantages in inaccessible areas, such as furcations.
- Further research into optimizing rotating instrument design could enhance their clinical applicability.