21426
document
Loss of tooth substance during root planing with various periodontal instruments : an in vitro study . Ultrasonic and power-driven instrumentation is gaining in significance as an acceptable alternative to manual periodontal root treatment . Some question whether they do not remove too much tooth substance . Various ultrasonic scalers , hand instruments and two power-driven systems were compared by assessing the loss of tooth substance due to root instrumentation . Quantitative analysis of this effect of the instruments used was performed on 20 freshly extracted , non-periodontally involved , large human molars . In the first study , 40 specimens were randomly assigned to four groups of treatment : combined use of ultrasonic scaler and Periopolisher diamond-coated inserts ( US-POL ) , hand instruments ( MANUAL ) , Perioplaner-Periopolisher system ( PPL-POL ) and Periokit ultrasonic-designed scalers ( PERIOKIT ) . The second study involved two treatment groups , ultrasonic scaler alone and hand instruments , each allocated with 20 teeth ( small root fragments ) . An unpaired two-tailed t test was carried out for both studies to compare the average weight loss of root substance with the modes of instrumentation . The level of significance was set at p < or=0.05 . The overall results of the first and second experimental trials did not reveal obvious differences in weight loss between the manual , ultrasonic or power-driven root treatments . Based on the results of these two comparative studies , the power-driven inserts or the various ultrasonic scalers tested did not remove more tooth substance than conventional hand instruments . They may thus be a useful alternative for the debridement of root surfaces .
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Intervention_Physical
root planing
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Intervention_Physical
Ultrasonic and power-driven instrumentation
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Intervention_Educational
Various
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Intervention_Physical
ultrasonic scalers
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Intervention_Educational
,
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Intervention_Physical
hand instruments
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Intervention_Educational
and
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Intervention_Physical
two power-driven systems
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Intervention_Physical
ultrasonic scaler and Periopolisher diamond-coated inserts ( US-POL )
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Intervention_Educational
,
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Intervention_Physical
hand instruments ( MANUAL )
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Intervention_Educational
,
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Intervention_Physical
Perioplaner-Periopolisher system ( PPL-POL )
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Intervention_Educational
and
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Intervention_Physical
Periokit ultrasonic-designed scalers ( PERIOKIT )
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Intervention_Educational
.
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Intervention_Other
ultrasonic scaler alone and hand instruments
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Outcome_Physical
loss of tooth substance
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Outcome_Physical
weight loss of root substance
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Outcome_Physical
weight loss
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Outcome_Physical
remove more tooth substance
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Participant_Sample-size
20
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Participant_Condition
freshly extracted
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Participant_Condition
non-periodontally involved
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Participant_Condition
large human molars
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Participant_Sample-size
40