Objective: Recently, self-etching fissure sealants have been introduced to reduce technical sensitivity; however, their efficacy should be assessed. The aim of this study was to assess of the microshear bond strength of self-etching and conventional fissure sealants.Materials and Methods: Thirty non-carious third molars were randomly divided into three groups (N=10). Microcylinders of Concise fissure sealant were bonded to pre-pared buccal and lingual surfaces using the two following procedures. In the first group, phosphoric acid was used to prepare the substrate; whereas in group two, Concise was used in combination with Prompt L-Pop. In group 3, a self-etching fissure sealant (Enamel Loc) was utilized per se. After 24 hours, the samples were subjected to 500 rounds of thermo cycling and shear bond testing using a microtensile tester ma-chine with a crosshead speed of 0.5mm/min. Data were analyzed using one-way re-peated measure ANOVA and Bonferroni Post HOC tests (SPSS version 16).Results: The mean and standard deviation of microshear bond strength of the groups were as follows: Group 1: Concise+etching (14.59±1.19 MPa), Group 2: Concise+Prompt L-Pop (12.86±1.98 MPa), and Group 3: Enamel Loc (5.59±0.72 MPa). One-way ANOVA revealed that all the differences were significant and the conventional sealant exhibited the highest mean bond strength.Conclusion: Conventional sealant using phosphoric acid etch application prior to fis-sure sealant application demonstrated more bond strength in comparison with that of self- etch bonding and self- etch sealant.

Background: Sealants play a crucial role in preventing decay and caries progression by creating a physical barrier, blocking the accumulation of food particles and microorganisms in pits and fissures. This study aimed to compare the microleakage of filled sealant, Giomer, and flow composite in sealant therapy of permanent teeth. Materials and Method: This invitro study was performed on 135 intact human premolars. In all samples, the tooth surface was etched with 37% phosphoric acid, then ESPE adhesive was applied and cured. The pit and fissures of these teeth were sealed with Beautifil flow, Perma Flow composite, and synergy filler resin sealant, respectively. All samples were subjected to 1000 thermal cycles between 5 and 55 °C, and were placed in an incubator. After washing the samples, 1-mm-thick buccal incision sections were prepared, and microleakage was examined by stereomicroscope. In addition, five samples from each group were selected separately to check the edge compliance with SEM. The data was analyzed by Kruskal-Walli’s test in SPSS version 24 (α=0. 05) Results: There was no significant difference in the amount of microleakage between the three materials of Giomer, filler sealant, and flow composite (p =0. 894). In the study with SEM, no significant difference was observed between the microleakage of the three groups (P = 0. 232). Conclusion: The study found similar microleakage levels between studied materials. MicAs Giomer, with its fluoride release property, can be recommended as an alternative to sealants.

Statement of the Problem: Sealants are employed to prevent carious lesion initiation and to arrest caries progression by providing a physical barrier that inhibits accumulation of micro-organisms and food particles in pits and fissures. The two most common materials used for sealing pits and fissures are resins and glass-ionomers. Ionoseal from VOCO company is one of the light curing glass-ionomer composite cements, whose mechanical properties should be investigated. Purpose: The aim of this study was to compare the micro tensile bond strength and micro leakage of Ionoseal with different surface pretreatments. Materials and Method: This in vitro experimental study was conducted on five groups of 95 sound human premolars. Each group consisted of five teeth for the micro tensile test and 14 teeth for the micro leakage test. The groups regarding the materials and the methods used were defined as Group 1: 35% phosphoric acid + total etch adhesive + Ionoseal, Group 2: universal adhesive+Ionoseal, Group 3: 35% phosphoric acid + Ionoseal, Group 4: Ionoseal, and Group 5 (control group): 35% phosphoric acid+Embrace fissure sealant. On the pre-pared buccal enamel of each tooth, a 5 mm block of the sealing material was created and thermo cycled. The specimens were serial sectioned to a cross section of about 1×1mm and loaded in a tensile pressure (0. 5 mm/min) until failure occurred. For the micro leakage test, the sealing material was placed into the prepared occlusal fissures and teeth were thermo cycled, and then immersed in 5%methylene blue. A section was made buccolingually,the dye penetration rate was measured based on Williams and Winter criteria under a stereomi-croscope. Data was analyzed with one-way ANOVA test and Kruskal-Wallis test. Results: Mean micro tensile bond strength was significantly different between the groups (p< 0. 001), and was significantly higher in Group 1. There was no significant difference between the frequency of modes of failure (p= 0. 81). The rate of micro leakage was signifi-cantly different between the five groups (p< 0. 001) and in Group 1 and 3,it was significant-ly lower than the other three groups. Conclusion: Ionoseal can be used successfully as a fissure sealant material. Etching the enamel surface with phosphoric acid is necessary and the use of a bonding agent before Ionoseal placement improves results.

Background and Aim: Fissure sealant therapy is one of the most effective strategies to prevent dental caries. Sealants fill the occlusal grooves of the posterior teeth and prevent the accumulation of microorganisms and subsequent development of caries as such. This study aimed to evaluate parental education on fissure sealant therapy. Materials and Methods: A search was conducted in seven international databases or websites including BioMed Central, Google Scholar, PubMed, ProQuest, and Seer, and two national databases (SID and Magiran) for relevant articles on the Iranian population published between 2011 and 2021. Of a total of 3,980 articles retrieved by the initial search, 7 articles were selected with experimental and quasi-experimental designs. The interventions were in the form of educational programs with follow-up sessions, examinations, and preventive services at different times. The variables included knowledge, attitude, self-efficacy, fissure sealant, and dental caries.  Results: All the tested variables significantly changed after the educational intervention. Conclusion: According to the results of the reviewed interventional studies in Iran, instruction of oral health-promoting behaviors and fissure sealant therapy to parents has a positive effect on the practice of the parents concerning fissure sealant therapy. It also appears that interventions based on theoretical education and changing behavioral models can be effective in promoting oral health practice.