The Effect of Different Final Irrigating Protocols on Cleanliness and Microhardness of Dentin: An in Vitro Study
Ahmed Aly Elyan Khalafallah;
Abstract
SUMMARY
T
he aim of the study was to evaluate the effect of different irrigating protocols on cleanliness of root canal wall and dentin microhardness.
A total of 56 human single rooted teeth. Decoronation was done, root length was 16mm. longitudinal grooves were performed on mesial and distal external root surfaces.
Samples were divided into four groups according to final irrigation:
Group I: Irrigation of teeth will be with 5ml of 5.25% NaOCl for 1 min followed by 5ml of 17%EDTA for 1 min then final flush with saline
Group II: Irrigation of teeth will be with 10ml QMix 2in1 for 2min
Group III: Irrigation of teeth will be with 5ml of 17% EDTA for 1min and 5ml of QMix 2in1 for 1 min
Group IV: Irrigation of teeth will be with 5ml of 5.25% NaOCl for 1 min and 5ml of QMix 2in1 for 1 min
Each group will be further divided into Subgroup a: 7 teeth with passive ultrasonic activation (PUI). Subgroup b: 7 teeth without ultrasonic activation.
Evaluation of cleanliness:
Longitudinal sections were desiccated and gold sputtered to be examined by scanning electron microscope (SEM).
Images were taken for cervical, middle, apical thirds. Scoring system was used to evaluate amount of debris removal and cleanliness of root canal. Data were collected and statistically analyzed.
Evaluation of microhardness:
Longitudinal root sections were embedded into autopolymerized resin in a plastic rings and were ground flat and smooth.
The measures were taken using Vickers microhardness tester at three different points (coronal, middle and apical thirds).
Data were collected and statistically analyzed.
Results showed that none of the used final irrigants give a perfect cleanliness conventionally. However, the four groups after passive ultrasonic irrigation showed higher scores for debris, smear layer removal.
All groups showed reduction in microhardness however, group I and II were the least detrimental to root dentin microhardness.
T
he aim of the study was to evaluate the effect of different irrigating protocols on cleanliness of root canal wall and dentin microhardness.
A total of 56 human single rooted teeth. Decoronation was done, root length was 16mm. longitudinal grooves were performed on mesial and distal external root surfaces.
Samples were divided into four groups according to final irrigation:
Group I: Irrigation of teeth will be with 5ml of 5.25% NaOCl for 1 min followed by 5ml of 17%EDTA for 1 min then final flush with saline
Group II: Irrigation of teeth will be with 10ml QMix 2in1 for 2min
Group III: Irrigation of teeth will be with 5ml of 17% EDTA for 1min and 5ml of QMix 2in1 for 1 min
Group IV: Irrigation of teeth will be with 5ml of 5.25% NaOCl for 1 min and 5ml of QMix 2in1 for 1 min
Each group will be further divided into Subgroup a: 7 teeth with passive ultrasonic activation (PUI). Subgroup b: 7 teeth without ultrasonic activation.
Evaluation of cleanliness:
Longitudinal sections were desiccated and gold sputtered to be examined by scanning electron microscope (SEM).
Images were taken for cervical, middle, apical thirds. Scoring system was used to evaluate amount of debris removal and cleanliness of root canal. Data were collected and statistically analyzed.
Evaluation of microhardness:
Longitudinal root sections were embedded into autopolymerized resin in a plastic rings and were ground flat and smooth.
The measures were taken using Vickers microhardness tester at three different points (coronal, middle and apical thirds).
Data were collected and statistically analyzed.
Results showed that none of the used final irrigants give a perfect cleanliness conventionally. However, the four groups after passive ultrasonic irrigation showed higher scores for debris, smear layer removal.
All groups showed reduction in microhardness however, group I and II were the least detrimental to root dentin microhardness.
Other data
| Title | The Effect of Different Final Irrigating Protocols on Cleanliness and Microhardness of Dentin: An in Vitro Study | Other Titles | تأثير طرق الارواء النهائية المختلفة على نظافة عاج السن وصلادته الدقيقة (دراسة معملية) | Authors | Ahmed Aly Elyan Khalafallah | Issue Date | 2016 |
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