Effect of Laser and Air Abrasion Pretreatment on the Microleakage of a Fissure Sealant Applied with Conventional and Self Etch Adhesives

2013 ◽  
Vol 37 (3) ◽  
pp. 281-288
Author(s):  
RE Tirali ◽  
C Çelik ◽  
N Arhun ◽  
G Berk ◽  
SB Cehreli
Keyword(s):  
Tooth Enamel ◽  
Statistical Significance ◽  
Qualitative Evaluation ◽  
Bonding Agent ◽  
Air Abrasion ◽  
Bonding Agents ◽  
Fissure Sealant ◽  
Acid Etch ◽  
Self Etch ◽  
Sealant Material

Aim: The purpose of this study was to investigate the effects of different pretreatment protocols along with different bonding agents on the microleakage of a fissure sealant material. Method: A total of 144 freshly extracted noncarious human third molars were used. The teeth were randomly assigned into three groups with respect to the pretreatment protocol employed: A. Air Abrasion B. Er,Cr:YSGG laser C. No pretreatment (Control). In each group specimens were further subjected to one of the following procedures before application of the sealant: 1. %36 Phosphoric acid-etch (AE) (DeTrey Conditioner 36/ Denstply, UK) 2.AE+Prime&Bond NT (Dentsply,UK) 3.Clearfil S3 Bond (Kuraray, Japan) 4.Clearfil SE Bond (Kuraray, Japan). All teeth were sealed with the same fissure sealant material (Conseal F/ SDI, Australia). Sealed teeth were further subjected to thermocycling, dye penetration test, sectioning and quantitative image analysis. Statistical evaluation of the microleakage data was performed with two way independent ANOVA and multiple comparisons test at p=0.05. For qualitative evaluation 2 samples from each group were examined under Scanning Electron Microscopy. Results: Microleakage was affected by both the type of pretreatment and the subsequent bonding protocols employed (p<0.05). Overall, the highest (Mean=0.36mm) and lowest (Mean=0.06 mm) microleakage values were observed in samples with unpretreated enamel sealed by S3+Conseal F and samples with laser pretreated enamel sealed by Acid Etch+Prime&Bond+Conseal F protocols, respectively (p<0.05). In the acid-etch group samples pretreated with laser yielded in slightly lower microleakage scores when compared with unpretreated samples and samples pretreated with air abrasion but the statistical significance was not important (p=0,179). Similarly, when bonding agent is applied following acid-etching procedure, microleakage scores were not affected from pretreatment protocol (p=0,615) (intact enamel/laser or air-abrasion). For both all-in one and two step self etch adhesive systems, unpretreated samples demonstrated the highest microleakage scores. Conclusions: For the groups in which bonding agent was utilized, pretreatments did not effected microleakage. Both the tested pretreatment protocols and adhesive procedures had different effects on the sealing properties of Conseal F in permanent tooth enamel.

scholarly journals Effect of Precuring and Postcuring of Total-etch and Self-etch Bonding Agents on the Microleakage of Fissure Sealants

2020 ◽  
Author(s):  
Bahman Seraj ◽  
Ghasem Meighani ◽  
Shabnam Milani ◽  
Mostafa Fatemi
Keyword(s):  
Pediatric Dentistry ◽  
Bonding Agent ◽  
Control Group ◽  
Single Bond ◽  
Bonding Agents ◽  
Fissure Sealant ◽  
The Third ◽  
Fifth Generation ◽  
Significant Difference ◽  
Self Etch

Objectives: Considering the importance of timesaving in pediatric dentistry, if the efficacy is achieved along with shorter working time and less technical sensitivity, the behavior management of young patients can be anticipated. This study aimed to compare the effect of precuring and postcuring of total-etch and self-etch bonding agents on the microleakage of sealants. Materials and Methods: This study was conducted on forty impacted third molars, which were surgically extracted. The samples were divided into five groups: 1. Control (etching and sealant), 2. Precured fifth-generation bonding agent (Adper Single Bond 2) and fissure sealant, 3. Postcured fifth-generation bonding agent (Adper Single Bond 2) and fissure sealant, 4. Precured seventh-generation bonding agent (Single Bond Universal) and fissure sealant, and 5. Postcured seventh-generation bonding agent (Single Bond Universal) and fissure sealant. All specimens were thermocycled (×1000), immersed in 0.5% basic fuchsine solution for 24 hours, sectioned, digitally photographed, and measured using the LAS EZ program. The data were analyzed using Kruskal-Wallis and Dunn’s tests. Results: Leakage in the control group and the third group was significantly lower than that in other groups. In pairwise comparisons, a significant difference was found between the control group and the fifth group and between the third group and the fifth group. Conclusion: The conventional method of sealant placement showed superior results in comparison with the use of an intermediate layer of the bonding agent.

An Investigation to Estimate the Flouride Uptake Adjacent to a Fluoride-releasing Bonging Agent

1995 ◽  
Vol 22 (2) ◽  
pp. 113-122 ◽  
Author(s):  
S. M. Chadwick ◽  
P. H. Gordon
Keyword(s):  
At Risk ◽  
Clinical Significance ◽  
Orthodontic Treatment ◽  
Bonding Agent ◽  
Bonding Agents ◽  
Acid Etch ◽  
Fixed Appliances

Decalcification of the teeth remains a problem during orthodontic treatment with fixed appliances. It has been suggested that bonding agents which release fluoride could supply it to the area of the tooth most at risk from decalcification. The aim of this study was to estimate uptake by enamel adjacent to a fluoride releasing bonding agent. Acid etch biopsies were used to estimate the concentration of fluoride in enamel adjacent to brackets bonded with Vitrabond® and Geristore®. Results indicate that there was a significant increase in the concentration of fluoride in enamel adjacent to Vitrabond®. The clinical significance of the increase in the concentration of fluoride adjacent to Vitrabond® and the mechanism by which fluoride moves from the material into the enamel remain unclear.

scholarly journals A comparison of microleakage in self-etch fissure sealants and conventional fissure sealants with total-etch or self-etch adhesive systems

2018 ◽  
Vol 12 (02) ◽  
pp. 242-246 ◽  
Author(s):  
Azam Nahvi ◽  
Alireza Razavian ◽  
Hoorieh Abedi ◽  
Jamshid Yazdani Charati
Keyword(s):  
In Vitro Study ◽  
Conventional Technique ◽  
Single Bond ◽  
Adhesive Systems ◽  
Fissure Sealants ◽  
Fissure Sealant ◽  
Acid Etch ◽  
Self Etch ◽  
Group 1

ABSTRACT Objective: The present study was conducted to compare microleakage in self-etching fissure sealants and conventional fissure sealants with total-etch or self-etch adhesive systems. Settings and Design: This experimental in vitro study was conducted on 60 healthy third molars extracted from humans. The first group received Acid etch + Clinpro sealant, the second group received Acid etch + Single bond 2 + Clinpro sealant, the third group received Single bond universal (self-etching bonding) + Clinpro sealant, and the fourth group received prevent seal self-etching sealant. Materials and Methods: An incision was made on the teeth after they were immersed in methylene blue 5%. The samples were then examined under a stereomicroscope and the dye penetration rate was measured based on the Williams and Winter criteria. Statistical Analysis Used: The Kruskal–Wallis and Mann–Whitney tests were used for data analysis in SPSS-18 (P < 0.05). Results: Group 1 which was treated with the conventional technique (acid + fissure sealant) had the highest rate of microleakage compared to Groups 2 and 3 (P < 0.001). Conclusion: The results showed that the use of bonding results in a significant reduction in the microleakage of fissure sealants. The microleakage caused when using self-etch fissure sealant was not different from that caused by the use of the conventional method.

scholarly journals Effect of Dentin Pretreatment with Chlorhexidine on Push-Out Bond Strength of Composite Restorations in Severely Damaged Primary Anterior Teeth

2020 ◽  
Author(s):  
Shabnam Milani ◽  
Bahman Seraj ◽  
Zahra Khoshlafz ◽  
Niusha Abazarian
Keyword(s):  
Bond Strength ◽  
Testing Machine ◽  
Bonding Agent ◽  
Bonding Agents ◽  
Composite Restorations ◽  
Anterior Teeth ◽  
Significant Difference ◽  
Self Etch ◽  
Push Out

Objectives: Achieving durable restorations with adequate strength in severely damaged primary anterior teeth in children is a priority. The aim of this study was to investigate the effect of dentin pretreatment with chlorhexidine on push-out bond strength of composite restorations. Materials and Methods: In this in vitro experimental study, 56 extracted primary anterior teeth were randomly divided into 4 groups: (1) saline and total-etch bonding agent, (2) chlorhexidine and total-etch bonding agent, (3) saline and self-etch bonding agent, and (4) chlorhexidine and self-etch bonding agent. After the application of bonding agents, the post space was filled with Z250 composite resin. Following thermocycling of the samples, the push-out test was performed using a universal testing machine, and the results were analyzed with two-way ANOVA. Results: The mean push-out bond strength values in groups 1 to 4 were 5.7, 8.39, 5.35, and 7 MPa, respectively. Chlorhexidine groups had significant differences with saline groups in bond strength (P<0.05) but there was no statistically significant difference between the self-etch and total-etch bonding agents in the groups (P>0.05). Conclusion: Both types of bonding agents (self-etch and total-etch) exhibited favorable results in radicular dentin of primary anterior teeth; however, pre-treatment with chlorhexidine increased the push-out bond strength of composite restorations in primary anterior teeth.

scholarly journals Evaluation of Adhesive Capacity of Universal Bonding Agents Used in Direct Composite Resins Repair

2017 ◽  
Vol 54 (3) ◽  
pp. 574-577 ◽  
Author(s):  
Simona Stoleriu ◽  
Sorin Andrian ◽  
Irina Nica ◽  
Andrei Victor Sandu ◽  
Galina Pancu ◽  
...  
Keyword(s):  
Hybrid Composite ◽  
Study Groups ◽  
Composite Resins ◽  
Bonding Agent ◽  
Interface Bonding ◽  
Sem Images ◽  
Bonding Agents ◽  
Etch And Rinse ◽  
Repair Procedure ◽  
Self Etch

The aims of the study were to characterise the resin-resin interface when a universal bonding agent (UBA) was used in two different strategies in direct composite repair and to evaluate the bonding capacity of UBA by microleakage assessment. In study groups a micro-filled hybrid and a nano-filled hybrid composite resins were aged in order to simulate an old restorations. As a repair material was chosen the same micro-filled hybrid composite resin that was used as an old restoration. UBA was applied in etch-and-rinse and self-etch strategies and was used as an intermediate layer in repair procedure. After the repair the samples were aged again. In control groups were included non-aged, repaired composite resins samples. The resin-resin interface was characterised on SEM images and the microleakage at the interface was evaluated by dye penetration assessment. Universal bonding agent used in direct composite resins repair showed a very good adaptation to non-aged micro-filled hybrid and nano-filled hybrid composite resins. Aging by saliva storage of repaired composite resins leaded to an enlargement of resin-resin junction and a increased microleakage irrespective of the strategy (etch-and-rinse or self -etch) used for bonding agent application. Etch-and-rinse strategy for universal bonging agent application determined a better interface bonding when compared to self -etch strategy.

scholarly journals The evaluation of different methods viz., acid etch and by air abrasion on retentivity of fissure sealant after 6 months: A clinical study

2014 ◽  
Vol 41 (1) ◽  
pp. 16
Author(s):  
P. V.Ravindranath Reddy ◽  
Anand Shigli ◽  
Dayanand Shirol ◽  
ShobhaD Deshpande ◽  
ShivayogiM Hugar ◽  
...  
Keyword(s):  
Clinical Study ◽  
Air Abrasion ◽  
Fissure Sealant ◽  
Acid Etch

Clinical Follow-up of a Fissure Sealant Placed Using Different Adhesive Protocols: A 24-month Split-mouth Study

2018 ◽  
Vol 43 (4) ◽  
pp. 362-371 ◽  
Author(s):  
AR Yazici ◽  
E Ozturk Bayazit ◽  
ZB Kutuk ◽  
G Ozgunaltay ◽  
E Ergin ◽  
...  
Keyword(s):  
Retention Rate ◽  
Group Iv ◽  
Retention Rates ◽  
Fissure Sealant ◽  
Group Iii ◽  
Group I ◽  
Etch And Rinse ◽  
Acid Etch ◽  
Self Etch

SUMMARY The purpose of this study was to evaluate the retention rates of a fissure sealant placed using different adhesive protocols over 24 months. Twenty-four subjects with no restorations or caries received fissure sealants (Clinpro Sealant, 3M ESPE) placed using different adhesive protocols. A total of 292 sealants were placed as follows by two previously calibrated dentists using a table of random numbers (n=73): group I, acid-etch/without adhesive; group II, with a self-etch adhesive (Adper Easy Bond, 3M ESPE); group III, with an etch-and-rinse adhesive (Adper Single Bond 2, 3M ESPE); group IV, with acid + self-etch adhesive (Adper Easy Bond). Two other calibrated examiners independently evaluated the sealants at baseline and at six-, 12-, 18-, and 24-month recalls. Each sealant was evaluated in terms of caries formation being present or absent and retention using the following criteria: 1 = total retention, 2 = partial loss, and 3 = total loss. Pearson's χ2 test was used to evaluate differences in retention rates among the sealants for each evaluation period. At the end of 24 months, total retention rates were 57.5%, 27.4%, 84.9%, and 76.7% in the acid-etch, self-etch adhesive, etch-and-rinse adhesive, and acid + self-etch adhesive groups, respectively. Although there were no statistically significant differences between the retention rates among the adhesive protocols at 6 months (p=0.684), significant differences were observed at the 12-, 18-, and 24-month evaluations. At 24 months, the lowest retention rates were observed in the self-etch group (p&lt;0.05). No caries development was observed in any of the groups. The retention rate of sealants placed using self-etch adhesive was poor compared with the other groups.

Evaluation of Shear Bond Strength a Composite Resin to I-CON Fissure Sealant with Different Surface Treatment

2021 ◽  
Author(s):  
Farinaz Katiraeifar ◽  
Mehrdad Barekatain ◽  
Davood Ghasemi ◽  
Kimia Sadeghpour
Keyword(s):  
Phosphoric Acid ◽  
Bond Strength ◽  
Resin Composite ◽  
Testing Machine ◽  
Surface Preparation ◽  
Bonding Agent ◽  
P Value ◽  
Fissure Sealant ◽  
Fourth Group ◽  
Self Etch

Introduction: Fissure sealants are one of the most proven ways to prevent tooth decay. These materials may remain on the tooth for a long time, and other areas of the tooth may decay. The purpose of this study was to present the best method for surface preparation a fissure sealant material (Icon) and composite restoration Materials and Methods: In this experimental laboratory study, 40 samples of composite restorative material were prepared in 4 groups of 10 discs of 6 mm in diameter and 2 mm in height. Total etch bonding agent was used in the first, second and third groups without surface preparation, with the use of drills and 37% phosphoric acid, and after drilling, respectively. In the fourth group, self-etch bonding agent was used after drilling. After that, Icon resin material was placed on the surface of the composite in a disc of 4 mm with height of 2mm in diameter and was cured. When the samples were thermocycled and incubated, their bonding strength was evaluated with Instron testing machine. Data were analyzed by one-way variance statistical ANOVA tests, Tukey test (p value < 0.05). Results: The mean value of bond strength of Icon to resin composite was significantly different among the 4 groups (p value < 0.05). The fourth group presented the greatest bond strength value while the third group had the lowest bond strength. Conclusion: When repairing fissure sealant, particularly Icon using resin composite, the best results of bond strength are achieved through surface roughening with drills and the application of self-etch bonding agents with a mild pH. Acidic etching agents (37% Phosphoric acid), however, have probably destructive effects on bond strength.

scholarly journals Self-etch bonding agent beneath sealant: Bond strength for laser-irradiated enamel

2013 ◽  
Vol 07 (03) ◽  
pp. 289-295
Author(s):  
Maria Cristina Borsatto ◽  
Jackelline de Lemes Giuntini ◽  
Marta Maria Martins Giamatei Contente ◽  
Jaciara Miranda Gomes-Silva ◽  
Carolina Paes Torres ◽  
...  
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Failure Modes ◽  
Third Molar ◽  
Bonding Agent ◽  
Yag Laser ◽  
Fissure Sealant ◽  
Etch And Rinse ◽  
Pit And Fissure Sealant ◽  
Self Etch

ABSTRACT Objectives: This study evaluated the in vitro shear bond strength (SBS) of a resin-based pit-and-fissure sealant (Fluroshield [F], Dentsply/Caulk) associated with either an etch-and-rinse (Adper Single Bond 2 [SB], 3M/ESPE) or a two-step self-etch adhesive system (Adper SE Plus [SE], 3M/ESPE) on Er: YAG laser-irradiated enamel. Materials and Methods: Seventeen sound third molar crowns were embedded in acrylic resin, and the mesial-distal enamel surfaces were flattened. The enamel sites were irradiated with a 2.94-μm wavelength Er: YAG laser (120 mJ, 4 Hz, noncontact mode/17 mm, 20 s). The specimens were randomly assigned to three groups according to the bonding technique: I - 37% phosphoric acid etching + SB + F; II - SE + F and III - F applied to acid-etched enamel, without an intermediate layer of bonding agent. In all of the groups, a 3-mm diameter enamel-bonding site was demarcated and the sealant cylinders were bonded. After 24 hours in distilled water, the shear bond strength was tested at a crosshead speed of 0.5 mm/minute. The data were analyzed by one-way ANOVA and Tukey′s test. The debonded specimens were examined with a stereomicroscope to assess the failure modes. Results: The mean SBS values in MPa were I = 6.39 (±1.44); II = 9.50 (±2.79); and III = 5.26 (±1.82). No statistically significant differences were observed between groups I and III; SE/F presented a significantly higher SBS than that of the other groups (P = 0.001). With regard to the failure mode, groups I (65%) and II (75%) presented adhesive failures, while group III showed 50% adhesive failure. Cohesive failure did not occur. Conclusion: The application of the two-step self-etch bonding agent (Adper SE Plus) beneath the resin pit-and-fissure sealant placement resulted in a significantly higher bond strength for the Er:YAG laser-irradiated enamel.

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