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Effects of Er:YAG laser on mineral content of sound dentin in primary teeth.

Guler C, Malkoc MA, Gorgen VA, Dilber E, Bulbul M - ScientificWorldJournal (2014)

Bottom Line: The data were analyzed by one-way analysis of variance and Tukey's HSD tests.No significant differences in Ca, K, Mg, Na, and P levels or Ca/P ratio were found among the groups (P > 0.05).SEM micrographs showed that surface irregularities increased with a higher power setting.

View Article: PubMed Central - PubMed

Affiliation: Department of Pediatric Dentistry, Faculty of Dentistry, Ordu University, 52100 Ordu, Turkey.

ABSTRACT
The aim of the present study was to evaluate the mineral content of sound dentin in primary teeth prepared using an Er:YAG laser at two different power settings. Thirty-six primary second molars were used in this study. Three dentin slabs were obtained from each tooth, and the slabs were randomly divided into three groups: Group A, control; Group B, Er:YAG laser at 3.5 W, 175 mJ, and 20 Hz, short pulse mode; and Group C, Er:YAG laser at 4 W, 200 mJ, and 20 Hz, medium-short pulse mode. One dentin slab per group was used to evaluate the dentinal morphology and surface roughness values using SEM and profilometer, respectively. Mineral content in the dentin slabs were calculated by inductively coupled plasma-atomic emission spectrometry (ICP-AES). The data were analyzed by one-way analysis of variance and Tukey's HSD tests. No significant differences in Ca, K, Mg, Na, and P levels or Ca/P ratio were found among the groups (P > 0.05). SEM micrographs showed that surface irregularities increased with a higher power setting. The surface roughness after laser treatment in Group B and Group C was found to be similar, unlike Group A.

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SEM micrograph of dentin surface treated with 4 W laser in Group C (original magnification ×2.50 k).
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fig3: SEM micrograph of dentin surface treated with 4 W laser in Group C (original magnification ×2.50 k).

Mentions: SEM views of the control (Group A) are shown in Figure 1. Er:YAG laser-treated dentin surfaces (Groups B and C) are shown in Figures 2 and 3. The surface treated at Group C was rougher than those of Groups A and B. A rough, crystalline irradiated dentin surface could be observed in both slabs treated with the laser. This appearance was more pronounced in the Group C (Figure 3).


Effects of Er:YAG laser on mineral content of sound dentin in primary teeth.

Guler C, Malkoc MA, Gorgen VA, Dilber E, Bulbul M - ScientificWorldJournal (2014)

SEM micrograph of dentin surface treated with 4 W laser in Group C (original magnification ×2.50 k).
© Copyright Policy - open-access
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4150513&req=5

fig3: SEM micrograph of dentin surface treated with 4 W laser in Group C (original magnification ×2.50 k).
Mentions: SEM views of the control (Group A) are shown in Figure 1. Er:YAG laser-treated dentin surfaces (Groups B and C) are shown in Figures 2 and 3. The surface treated at Group C was rougher than those of Groups A and B. A rough, crystalline irradiated dentin surface could be observed in both slabs treated with the laser. This appearance was more pronounced in the Group C (Figure 3).

Bottom Line: The data were analyzed by one-way analysis of variance and Tukey's HSD tests.No significant differences in Ca, K, Mg, Na, and P levels or Ca/P ratio were found among the groups (P > 0.05).SEM micrographs showed that surface irregularities increased with a higher power setting.

View Article: PubMed Central - PubMed

Affiliation: Department of Pediatric Dentistry, Faculty of Dentistry, Ordu University, 52100 Ordu, Turkey.

ABSTRACT
The aim of the present study was to evaluate the mineral content of sound dentin in primary teeth prepared using an Er:YAG laser at two different power settings. Thirty-six primary second molars were used in this study. Three dentin slabs were obtained from each tooth, and the slabs were randomly divided into three groups: Group A, control; Group B, Er:YAG laser at 3.5 W, 175 mJ, and 20 Hz, short pulse mode; and Group C, Er:YAG laser at 4 W, 200 mJ, and 20 Hz, medium-short pulse mode. One dentin slab per group was used to evaluate the dentinal morphology and surface roughness values using SEM and profilometer, respectively. Mineral content in the dentin slabs were calculated by inductively coupled plasma-atomic emission spectrometry (ICP-AES). The data were analyzed by one-way analysis of variance and Tukey's HSD tests. No significant differences in Ca, K, Mg, Na, and P levels or Ca/P ratio were found among the groups (P > 0.05). SEM micrographs showed that surface irregularities increased with a higher power setting. The surface roughness after laser treatment in Group B and Group C was found to be similar, unlike Group A.

Show MeSH
Related in: MedlinePlus