Abstract | OBJECTIVE: MATERIAL AND METHODS: Forty freshly extracted human maxillary anterior teeth were collected at random. Root canal obturations were performed using master apical file no. 60 k-type for obturated teeth. All teeth were stored in 100% humidity at 37 degrees C for 48h to allow time for the sealer to set. Dentine of 35 teeth was exposed by removing the cementum, and the remaining five teeth represented a negative control group. Specimens were examined using stereomicroscopy to show the surface topography of the dentine substrate before and after treatment with Nd:YAG laser or sensodyne. RESULTS: A double-blind technique was used when taking measurements of ink penetration (in mm) for each group. Teeth treated by Nd:YAG laser showed the least ink penetration, followed by teeth treated by sensodyne. The positive control group demonstrated complete ink penetration and the negative control group showed no ink penetration. Stereomicroscopic examination of specimens treated with Nd:YAG laser showed deposition on the dentinal surface, and specimens treated with sensodyne showed partial deposition. Untreated specimens were free of deposition and the tubules remained patent. CONCLUSION: There is no significant difference in the occluding effect of Nd:YAG laser and sensodyne toothpaste. Both treatments have a promising effect on the reduction of permeation through exposed dentinal tubules. However, the occluding effect of Nd:YAG laser occurs within seconds whereas that of sensodyne takes at least 3 weeks.
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Authors | Lehadh M Al-Azzawi, Raad N Dayem |
Journal | Archives of oral biology
(Arch Oral Biol)
Vol. 51
Issue 7
Pg. 535-40
(Jul 2006)
ISSN: 0003-9969 [Print] England |
PMID | 16460664
(Publication Type: Comparative Study, Journal Article, Randomized Controlled Trial)
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Chemical References |
- Drug Combinations
- Nitrates
- Phosphates
- Sensodyne
- Toothpastes
- Fluorides
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Topics |
- Analysis of Variance
- Dentin
(drug effects, radiation effects, ultrastructure)
- Drug Combinations
- Fluorides
(therapeutic use)
- Humans
- Low-Level Light Therapy
(methods)
- Microscopy, Electron, Scanning
- Nitrates
(therapeutic use)
- Permeability
- Phosphates
(therapeutic use)
- Tooth, Nonvital
(drug therapy, radiotherapy)
- Toothpastes
(therapeutic use)
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