Cariogenic Potential of Pediatric Liquid Medicaments- An in vitro Study

2012 ◽  
Vol 36 (4) ◽  
pp. 363-367 ◽  
Author(s):  
DM Dalpian ◽  
L Casagrande ◽  
R Franzon ◽  
GMC Dutra ◽  
FB Araujo
Keyword(s):  
Primary Teeth ◽  
Composite Resin ◽  
In Vitro Study ◽  
Pulp Chamber ◽  
Pulp Capping ◽  
Caries Removal ◽  
Indirect Pulp Capping ◽  
Carious Teeth ◽  
Partial Caries Removal

Aim: To evaluate the dentin microhardness of primary teeth undergoing indirect pulp capping (IPC) after partial caries removal. Materials: Primary molars were treated with IPC, restored with self-etching primer (Clearfil SE Bond; CSE), and filled with composite resin (Filtek Z250) with (n = 10) or without (n = 7) a calcium hydroxide base liner (Dycal; Dy). After tooth exfoliation, the microhardness of the demineralized dentin remaining under the restoration (n = 17) was analyzed and compared with that of sound and carious primary dentin (n = 20). Microhardness measurements were obtained from the deepest portion of the cavity until the roof of the pulp chamber. Data were analyzed by Kruskal-Wallis test (p < 0.05). Results: There was no difference in microhardness values at all depths between the treated groups (DY and CSE), but when the exfoliated carious teeth were included, the CSE had significantly higher values at 35-?m depth. This difference was only detected in the DY group after a depth of 200 µm. At 700 ?m, there was no difference in microhardness values between all 4 groups. Conclusions: Primary teeth that underwent IPC showed the same microhardness, regardless of the capping material used.

Compositional and structural changes of human dentin following caries removal by Er, Cr: YSGG laser irradiation in primary teeth

2002 ◽  
Vol 26 (4) ◽  
pp. 377-382 ◽  
Author(s):  
Mozammal Hossain ◽  
Yukio Nakamura ◽  
Yoshishige Yamada ◽  
Yoshiko Murakami ◽  
Koukichi Matsumoto
Keyword(s):  
Laser Irradiation ◽  
Structural Changes ◽  
Primary Teeth ◽  
Thermal Damage ◽  
In Vitro Study ◽  
Surface Characteristic ◽  
Human Dentin ◽  
Caries Removal ◽  
Induced Changes

In this in vitro study, the compositional and structural changes of human dentin, and knoop harness of cavity floor following the removal of dental caries by Er,Cr:YSGG laser irradiation in primary teeth was compared with that of the conventional bur cavity. The results confirmed that laser irradiation revealed minimal thermal damage to the surrounding tissues, minimal thermal induced changes of dental hard tissue compositions, and favorable surface characteristic.

scholarly journals Antibacterial Activity of Two Chemomechanical Caries Removal Gels on Carious Dentin of Primary Teeth: An in vitro Study

2016 ◽  
Vol 17 (12) ◽  
pp. 1027-1032 ◽  
Author(s):  
Hesham S Khalil ◽  
Shabnam Gulzar ◽  
Ruchi Arora ◽  
Altaf H Shah ◽  
Bhupendra Bhardwaj ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Primary Teeth ◽  
In Vitro Study ◽  
Antibacterial Activities ◽  
Viable Count ◽  
Primary Molar ◽  
Significant Difference ◽  
Molar Teeth ◽  
Caries Removal

ABSTRACT Introduction Chemomechanical caries removal (CMCR) is an effective method of caries removal especially for primary teeth as they cause less discomfort when compared with conventional caries removal. The most significant thing about caries removal is the elimination of cariogenic bacteria. This study compares the antibacterial activity of two CMCR gels. Materials and methods A total of 40 primary molar teeth with carious dentin were split along the long axis in a laboratory. Total viable count (TVC) was taken for the teeth before splitting as a measure of colony-forming units per milliliter (CFU/mL). Each half was treated with either Carisolv or Carie-Care CMCR gels. Clean dentin samples were evaluated for Streptococcus mutans (SM) and Lactobacillus acidophilus (LB) after removal of carious tissue using the caries removal gels using serial dilutions and incubating on specific agar plates. Results The results showed significant reduction in mean TVC after use of both the CMCR gels. Both gels reduced the CFU/mL of SM and LB to a significant level (p < 0.05). However, there was no significant difference between the antibacterial activities of the two CMCR gels. Conclusion The CMCR gels (Carisolv and Carie-Care) significantly reduced the residual TVC as well as SM and LB in carious primary dentin. Both CMCR gels had a similar antibacterial activity on the carious dentin of primary teeth. Clinical significance The CMCR gels tested have a significant antibacterial activity and can be effectively used for elimination of caries-causing bacteria in primary teeth. How to cite this article Gulzar S, Arora R, Shah AH, Bhardwaj B, Abusalim G, Khalil HS, Wyne AH. Antibacterial Activity of Two Chemomechanical Caries Removal Gels on Carious Dentin of Primary Teeth: An in vitro Study. J Contemp Dent Pract 2016;17(12):1027-1032.

Microleakage of composite resin restoration in cavities prepared by Er,Cr: YSGG laser irradiation and etched bur cavities in primary teeth

2002 ◽  
Vol 26 (3) ◽  
pp. 263-268 ◽  
Author(s):  
Mozammal Hossain ◽  
Yukio Nakamura ◽  
Yoshishige Yamada ◽  
Yoshiko Murakami ◽  
Koukichi Matsumoto
Keyword(s):  
Laser Irradiation ◽  
Primary Teeth ◽  
Composite Resin ◽  
In Vitro Study ◽  
Laser Cavity ◽  
Cavity Surface ◽  
Good Adhesion ◽  
Acid Etch ◽  
Composite Resin Restoration

In this in vitro study, the surface alterations of enamel and dentin in cavities prepared by Er,Cr:YSGG laser irradiation was investigated by scanning electron microscopy and compared to the microleakage degree after composite resin restoration with etched bur cavities in human primary teeth. The results confirmed that laser cavity surface facilitated a good adhesion with the restorative materials; the acid etch step can be easily avoided with the laser treatment.

scholarly journals Temperature change in pulp chamber of primary teeth during curing of coloured compomers: an in vitro study using pulpal blood microcirculation model

PeerJ ◽  
2019 ◽  
Vol 7 ◽  
pp. e7284 ◽  
Author(s):  
Ceylan Çağıl Ertuğrul ◽  
Ihsan Furkan Ertuğrul
Keyword(s):  
Primary Teeth ◽  
Irradiation Time ◽  
Exothermic Reaction ◽  
In Vitro Study ◽  
Curing Process ◽  
Pulp Chamber ◽  
Second Molar ◽  
Gold Silver ◽  
Group 15

Introduction An increase in the temperature of the pulp chamber occurs during polymerisation of all types of light-curing resin-containing restorative materials, due to both the exothermic reaction of the material and the energy absorbed during the curing process. Increase in temperature of the pulp chamber of primary teeth during the curing process or the thermal conductivity properties of coloured compomers (CCs) have not yet been investigated in detail. The aim of the present study was to investigate the increase in pulpal temperature in primary teeth during curing of CCs. Materials and Methods A Class-II cavity was prepared on the extracted primary mandibular second molar. Pulpal microcirculation of the tooth was performed using an experimental mechanism. The study included 15 groups and 10 experiments in each. Seven different CCs: pink, blue, gold, silver, orange, lemon, green, respectively from two different manufacturers (Groups 1–7: Twinky Star; VOCO, Cuxhaven, Germany. Groups 8–14: Nova Rainbow; IMICRYL, Konya, Turkey.) and a tooth-CC (Group 15: Dyract XP; DENTSPLY, Weybridge, UK.) were applied in prepared cavity. In all groups the compomers were light cured for 40 s. Intrapulpal temperature changes (Δt) in 20th and 40th second were recorded. In Group-15 the Δt values in 10th second were also recorded as per the manufacturer’s instructions. The Kruskal–Wallis test and the Mann–Whitney-U test were used for statistical analyses. Results At the end of 40-s irradiation time, the orange, lemon and green colours of Nova Rainbow resulted in significantly lower Δt values than the same colours of Twinky Star (p = 0.0001), and silver, blue, lemon, green, orange, and pink CCs of Nova Rainbow and the blue and silver shades of Twinky Star demonstrated lower Δt values than the reported critical temperature increase (5.5 °C). Conclusion An increase in the irradiation time consequently led to an increase in the intrapulpal temperature. Therefore, manufacturers should focus on production of new CCs with shorter polimerization time.

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