Gül Tosun

Evaluation of formocresol, calcium hydroxide, ferric sulfate, and MTA primary molar pulpotomies

Objective: The aim of this study is to evaluate four different pulpotomy medicaments in primary molars. Materials and Methods: A total of 147 primary molars with deep caries were treated with four different pulpotomy medicaments (FC: formocresol, FS: ferric sulfate, CH: calcium hydroxide, and MTA: mineral trioxide aggregate) in this study. The criteria for tooth selection for inclusion were no clinical and radiographic evidence of pulp pathology. During 30 months of follow-up at 6-month intervals, clinical and radiographic success and failures were recorded. The differences between the groups were statistically analyzed using the Chi-square test and Kaplan-Meier analysis. Results: At 30 months, clinical success rates were 100%, 95.2%, 96.4%, and 85% in the FC, FS, MTA, and CH groups, respectively. In radiographic analysis, the MTA group had the highest (96.4%), and the CH group had the lowest success rate (85%). There were no clinical and radiographic differences between materials (P > 0.05). Conclusions: Although there were no differences between materials, only in the CH group did three teeth require extraction due to further clinical symptoms of radiographic failures during the 30-month follow-up period. None of the failed teeth in the other groups required extraction during the 30-month follow-up period.

Effects of Er:YAG laser on bond strength of self‐etching adhesives to caries‐affected dentin

The erbium:yttrium–aluminum–garnet (Er:YAG) laser may be effective the bond strength of adhesive systems on dentine surfaces, the chemical composition and aggressiveness of adhesive systems in clinical practice. The purpose of this study was to evaluate the effects of the Er:YAG laser system with the bonding ability of two different self‐etching adhesives to caries‐affected dentine in primary molars. Ninety mid‐coronal flat dentine surfaces obtained from sound and caries‐affected human primary dentine were treated with an Er:YAG laser or a bur. The prepared surfaces were restored with an adhesive system (Xeno V; Clearfil S3) and a compomer (Dyract Extra). The restored teeth were sectioned with a low‐speed saw and 162 samples were obtained. The bond strength of the adhesive systems was tested using the micro‐tensile test method. The data were statistically analyzed. A restored tooth in each group was processed for scanning electron microscopy evaluation. The values of the highest bond strength were obtained from the Clearfil S3‐Er:YAG laser‐sound dentine group in all groups. (24.57 ± 7.27 MPa) (P > 0.05). The values of the lowest bond strength were obtained from the Xeno V‐Er:YAG laser‐sound dentine group in all groups (11.01 ± 3.89 MPa). It was determined that the Clearfil S3 increased the bond strength on the surface applied with Er:YAG laser according to the Xeno V. Microsc. Res. Tech. 77:282–288, 2014.

Antimicrobial effect of ozonated water, sodium hypochlorite and chlorhexidine gluconate in primary molar root canals

Objective: The aim was to determine the antimicrobial effect of ozonated water, ozonated water with ultrasonication, sodium hypochloride and chlorhexidine (CHX) in human primary root canals contaminated by Enterococcus faecalis (E. faecalis). Materials and Methods: Fifty-eight extracted human primary molar teeth were used. Crowns were cut off using a diamond saw under water-cooling. One hundred roots were obtained and mechanically prepared. The roots were then sterilized by autoclaving in water for 15 min at 121°C. All samples were contaminated with E. faecalis for 24 h and the root canals were randomly divided into five groups (n = 20). Group I: 25 mg/L of Ozonated water (O 3 aq), Group II: 25 mg/L of O 3 aq with ultrasonication, Group III: 2.5% Sodium hypochloride (NaOCl), Group IV: 2% CHX and Group V: Positive control. The canal of each specimen was irrigated for 4 min and positive control was untreated. All root canals were agitated with sterile saline solution. The saline solution was collected from canals with sterile paper points. For each specimen, the paper points were transposed to eppendorf vials containing 2 ml of brain heart infusion. According to bacterial proliferation, the mean values of optical density were achieved by ELέSA (Biotek EL ×800, Absorbance Microplate Reader, ABD) and the data were analyzed. Results: NaOCI, CHX and two types of O 3 aq were found statistically different than positive control group. NaOCI irrigation was found significantly most effective. Conclusions: NaOCl, CHX and O 3 aq applications provide antibacterial effect in vitro conditions in primary root canals.

Treatment of periodontal abscess caused by occlusal trauma: A case report

Orthodontic treatment has a big role in prevention and treatment of dental malposition. The signs and symptoms experienced by patients with occlusal trauma are mobility of teeth, pain on mastication, and periodontal disease. In this case report, an 8-year-old girl who was noticed to have intraoral swelling by her parents 2 days ago is reported. It was diagnosed as a periodontal abscess caused by occlusal trauma. As a treatment planning, it was decided that abscess be drained and orthodontic appliances be used to eliminate chronic trauma. Root developing and healthy periodontal status were observed following the treatment as a result of 36 months follow-up.

Evaluation of Temperature Changes in the Pulpal Chamber of the Primary Tooth During Curing of Colored Compomers

Purpose: To investigate the temperature changes in the primary teeth pulp chambers during the curing of different colored compomers Methods: Five extracted primary mandibular second molars were prepared with class II cavities. Gold, blue, green, berry, and tooth (control group) colored compomers were tested in two steps (aproximal and occlusal). Measurement of pulp chamber temperature changes during curing was performed with a J type thermocouple. The data including differences between the highest and initial temperature values were recorded and analyzed by two-way ANOVA and Mann-Whitney U tests Results: There were statistically significant differences temperature changes in groups (p< 0.05). Gold colored compomer showed the highest temperature increase in both proximal and occlusal surfaces. Tooth colored compomer(A2) showed the lower temperature increase. The temperature increase in aproximal cavities was found to be higher than the temperature increase in occlusal cavities. Conclusions: Colored compomer can be an alternative restorative materials in superficial class I and II cavities in primary teeth. Dark coloured compomers should be used in deep cavities.

Effect of endodontic sealers on bond strength of restorative systems to primary tooth pulp chamber

Background/purpose Although current literature suggests that root canal sealers affect the bonding ability of restorative systems to pulp chamber dentin of permanent teeth, primary teeth have not been investigated. This study intended to evaluate the microtensile bond strength (μTBS) of three restorative systems to pulp chamber dentin in primary teeth and to determine the effect of two different root canal sealers on the μTBS. Materials and methods Ninety primary molars were used in this study. The teeth were randomly divided into three main groups according to canal sealers: (1) control (without sealer); (2) Metapex; and (3) zinc-oxide eugenol. The main groups were further divided into three subgroups depending on the coronal restorative system: (1) compomer (Prime Bond NT + Dyract EXTRA); (2) composite (Clearfil Tri-S Bond + Clearfil Photo Posterior); and (3) resin-modified glass ionomer (Fuji II LC). After restoration, the buccal wall of the pulp chamber was sectioned to obtain sticks (1 mm × 1 mm). The μTBS was then measured. Data were analyzed with two-way analysis of variance, followed by a posthoc test. The interfacial morphology of the bonded space was evaluated using scanning electron microscopy. Results In the control group, a significant difference was observed only for the μTBS of the composite (P < 0.05). Compared with the control groups, Metapex and zinc-oxide eugenol significantly reduced the μTBS of restorative systems (P < 0.05). Conclusion Composite materials seemed to bond to pulp chamber dentin in primary teeth with a higher strength than compomer and resin-modified glass ionomer. Metapex and zinc-oxide eugenol canal filling materials reduced the bond strength of all three restorative systems.

Farkli yüzey hazirlama yöntemlerinin fissür örtücülerin bağlanma dayanimi üzerine olan etkisi

Amac: Bu calismada amaci kurutma ajani/ kurutma ajani olmaksizin mine yuzeyinin hazirlanmasinda asitle puruzlendirme ve Er:YAG lazerin (QSP ve MSP mod) fissur ortucunun baglanma dayanimi uzerine etkisini degerlendirmek amaclandi. Gerec ve Yontemler: Bu calismada 30 adet curuksuz daimi dis kullanildi. Disler mine-sement sinirinin 2 mm ustunden kesildi ve kokler uzaklastirildi. Disler meziodistal olarak ikiye ayrildi. Elde edilen 60 yarim dis akrilik recine icine gomuldu. Mine yuzeyinde fissure ortuculer icin 2 mm capinda alan olusturuldu. Butun gruplara Ultraseal XT plus (Fissur ortucu:FO) uygulandi. Ornekler randomize olarak 6 gruba ayrildi (n:10); G1:% 37 fosforik asit + Prima Dry + FO, G2:% 37 fosforik asit + FO, G3: Er: YAG (MSP modu) + Prima Dry + FO; G4: Er: YAG (MSP modu) + FO; G5: Er: YAG (QSP modu) + Prima Dry + FO; G6: Er: YAG (QSP modu) + FO. Ornekler 24 saat distile su icinde bekletildikten sonra baglanma kuvvetleri, universal test makinesi ile test edildi. Verileri karsilastirmak icin Kruskal-Wallis ve Mann-Whitney U-testi kullanildi. Bulgular: Gruplara ait baglanma dayanimlari soyledir (MPa) G1: 11.33, G2: 9.76, G3: 8.65, G4: 7.72, G5: 4.49, G6: 2.73. Gruplar arasinda istatistiksel fark oldugu gozlendi (p < 0.05). Sonuc: Mine yuzeyine asit uygulamasi, Er:YAG lazer QSP ve MSP moda gore daha iyi sonuclar verdigi gorulmustur. Fissur ortucu uygulanmadan once kurutma ajani uygulanabilir.

DİŞ HEKİMLİĞİNDE FOTODİNAMİK TEDAVİ

In this review, history, action mechanism, usage areas in dentistry, and side effects of antimicrobial photodynamic therapy (PDT), is considered as a solution to “resistance” problem resulting from antibiotic treatments, was investigated in the light of literature

Polymerization shrinkage of six different fissure sealants

Objectives: The objective of this study was to evaluate and compare the polymerization shrinkage of six proprietary pit and fissure sealants (Helioseal F, Fissurit FX, Smartseal & loc F, Dyract Seal, Clinpro TM Sealant, Teethmate F-1). Materials and Methods: A total of 120 glass ring molds (8.5 mm in inner diameter and 2 mm in height) were prepared after which the internal surface of the molds were etched with hydrofluoric acid for 5 min. The test materials (n = 20/group) were placed into the molds and thereafter sandwiched between two glass slides. All groups were polymerized for 20 s using a high-intensity quartz tungsten halogen (HQTH) light unit (Optilux 501). The volumetric polymerization shrinkage for each pits and fissure sealant was measured using the specific density method modified by Puckett and Smith. All data were analyzed statistically using one-way analysis of variance and Tukey honest significant difference (HSD) test at P < 0.05. Results: A ranking for the shrinkage values were obtained as follows: Teethmate F-1 (7.40 ± 1.17%) > Clinpro TM Sealant (6.60 ± 1.54%) > Dyract Seal (5.38 ± 1.30%) > Smartseal & loc F (5.06 ± 1.22%) > Fissurit FX (4.30 ± 1.15%) > Helioseal F (3.30 ± 0.69%). Clinpro TM Sealant and Teethmate F-1 displayed the highest shrinkage values (P < 0.05). The lowest shrinkage values were obtained with Helioseal F (3.30 ± 0.69%) and Fissurit FX (4.30 ± 1.15%) (P < 0.05). Conclusion: Within the experimental conditions of the present study, sealant materials containing higher concentrations of fillers displayed lower polymerization shrinkage values.

Early loss of a permanent tooth due to preceding primary tooth infection

The aim of the study was to attract attention to the risk of losing a permanent tooth because of an untreated previous primary tooth infection. A 6-year-old girl presented to our clinic with complaints of excessive mobility of a permanent tooth. It was learned from her parents that her upper right primary first molar had broken into pieces because of caries and that she had swelling in her right cheek and had used antibiotics. During an intraoral examination, some pieces of roots of the upper right primary first molar were noticed. The permanent successor tooth was observed erupted as hypoplastic and having excessive mobility. Radiological examination revealed that there was a large radiolucent area around it. The pieces of primary molar′s roots and permanent right upper first premolar tooth were determined to need extraction. In this case report, an upper right permanent first premolar was lost due to infection of the preceding primary molar tooth. Parents must be enlightened as to the importance of primary teeth health and the potential developmental pathology of permanent teeth resulting from infection spreading from the primary tooth.