Afsaneh Rahmati | Shahid Beheshti University of Medical Sciences (original) (raw)

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Papers by Afsaneh Rahmati

Please cite this article as follows: Ahangari Z, Mojtahed Bidabadi M, Asnaashari M, Rahmati A, Ta... more Please cite this article as follows: Ahangari Z, Mojtahed Bidabadi M, Asnaashari M, Rahmati A, Tabatabaei FS. Comparison of the antimicrobial efficacy of calcium hydroxide and photodynamic therapy against Enterococcus faecalis and Candida albicans in teeth with periapical lesions; an in vivo study.

Background: Insufficient root canal disinfection is one of the main reasons for persistent periap... more Background: Insufficient root canal disinfection is one of the main reasons for persistent periapical pathology. Photodynamic therapy (PDT) has been proven effective in disinfecting infected root canals. The aim of this study was to evaluate the antimicrobial effect of photo activated disinfection (PAD) when using toluidine blue as photosensitizer and a LED lamp after the conventional treatment, and comparing it with calcium hydroxide therapy in vivo. Methods: This clinical trial includes 20 patients with molars requiring endodontic retreatment. After the conventional treatment, first microbiological samples were obtained using sterile rotary ProTaper F2 file and 3 paper points and transferred to a microbiology laboratory. Group 1 (n = 10) specimens underwent PAD with photosensitizer (PS) solution (0.1 mg/mL TB) and irradiation with Fotosan light emitting diode (LED) lamp (635 nm, 200 mW/cm2) for 60 s. Creamy Ca(OH)2 paste was used in group 2 (n = 10) for two weeks. A second sample was then obtained. The samples were cultured and then bacterial colonies were counted. Data included number of colony forming units (CFUs) before and after treatments, analyzed by t-test and analysis of covariance (ANCOVA) using SPSS vs.18. Results: A significant difference between results of before and after treatment of both groups (calcium hydroxide therapy p = 0.02 < 0.05, PAD p < 0.0001) indicated the efficacy of both treatments. The mean numbers for log 10 CFUs/mL before calcium hydroxide therapy and PAD with LED irradiation was 10.1968 and 11.3773. After treatment, the mean numbers were 9.4202 and 8.3772, respectively. The difference in results after treatment between groups was significant (p = 0.01 < 0.05) and indicate that PAD was more effective. Conclusion: PAD and calcium hydroxide therapy, as auxiliary methods adjunct to conventional root canal therapy, are both effective in root canal disinfection. In comparison with calcium hydroxide therapy, PAD leads to a greater reduction in enterococcus faecalis number in the infected root canals.

ARTICLE INFO ABSTRACT Article Type: Case Report This article describes successful use of calcium-... more ARTICLE INFO ABSTRACT Article Type: Case Report This article describes successful use of calcium-enriched mixture (CEM) cement and Biodentine in apexogenesis treatment in two 8-year-old patients, one with immature permanent molar diagnosed primarily with irreversible pulpitis and the other with partially vital maxillary central incisor. After access cavity preparation, partial pulpotomy in molar and full pulpotomy in central was performed, and the remaining pulps was capped with either Biodentine or CEM cement, in each tooth. The crowns were restored with composite filling material at the following visit. The post-operative radiographic and clinical examinations (approx. average of 16 months) showed that both treated teeth remained functional, with complete root development and apex formation. A calcified bridge was produced underneath the capping material. No further endodontic intervention was necessary. Considering the healing potential of immature vital pulps, the use of CEM cement and Biodentine for apexogenesis might be an applicable choice. These new endodontic biomaterials might be appropriate for vital pulp therapies in an immature tooth. However, further clinical studies with longer follow-up periods are recommended.

This report presents the case of a 25-year-old female patient without pre-existing medical condit... more This report presents the case of a 25-year-old female patient without pre-existing medical conditions. She experienced extraction of impacted right inferior third molar, which was fused to a supernumerary fourth molar, sharing its roots, crown and pulp chambers. Upon radiologic imaging and surgical planning, the tooth was extracted under local anesthesia without complications during or after surgery and on 1-year follow-up.

Background: Prediction of skeletal growth is necessary for growth modification and surgical ortho... more Background: Prediction of skeletal growth is necessary for growth modification and surgical orthodontic treatments and is usually done by assessing skeletal maturity indicators in hand-wrist radiographs. The use of growth stages of cervical vertebrae in lateral cephalograms has been suggested to avoid overexposure.

Please cite this article as follows: Ahangari Z, Mojtahed Bidabadi M, Asnaashari M, Rahmati A, Ta... more Please cite this article as follows: Ahangari Z, Mojtahed Bidabadi M, Asnaashari M, Rahmati A, Tabatabaei FS. Comparison of the antimicrobial efficacy of calcium hydroxide and photodynamic therapy against Enterococcus faecalis and Candida albicans in teeth with periapical lesions; an in vivo study.

Background: Insufficient root canal disinfection is one of the main reasons for persistent periap... more Background: Insufficient root canal disinfection is one of the main reasons for persistent periapical pathology. Photodynamic therapy (PDT) has been proven effective in disinfecting infected root canals. The aim of this study was to evaluate the antimicrobial effect of photo activated disinfection (PAD) when using toluidine blue as photosensitizer and a LED lamp after the conventional treatment, and comparing it with calcium hydroxide therapy in vivo. Methods: This clinical trial includes 20 patients with molars requiring endodontic retreatment. After the conventional treatment, first microbiological samples were obtained using sterile rotary ProTaper F2 file and 3 paper points and transferred to a microbiology laboratory. Group 1 (n = 10) specimens underwent PAD with photosensitizer (PS) solution (0.1 mg/mL TB) and irradiation with Fotosan light emitting diode (LED) lamp (635 nm, 200 mW/cm2) for 60 s. Creamy Ca(OH)2 paste was used in group 2 (n = 10) for two weeks. A second sample was then obtained. The samples were cultured and then bacterial colonies were counted. Data included number of colony forming units (CFUs) before and after treatments, analyzed by t-test and analysis of covariance (ANCOVA) using SPSS vs.18. Results: A significant difference between results of before and after treatment of both groups (calcium hydroxide therapy p = 0.02 < 0.05, PAD p < 0.0001) indicated the efficacy of both treatments. The mean numbers for log 10 CFUs/mL before calcium hydroxide therapy and PAD with LED irradiation was 10.1968 and 11.3773. After treatment, the mean numbers were 9.4202 and 8.3772, respectively. The difference in results after treatment between groups was significant (p = 0.01 < 0.05) and indicate that PAD was more effective. Conclusion: PAD and calcium hydroxide therapy, as auxiliary methods adjunct to conventional root canal therapy, are both effective in root canal disinfection. In comparison with calcium hydroxide therapy, PAD leads to a greater reduction in enterococcus faecalis number in the infected root canals.

ARTICLE INFO ABSTRACT Article Type: Case Report This article describes successful use of calcium-... more ARTICLE INFO ABSTRACT Article Type: Case Report This article describes successful use of calcium-enriched mixture (CEM) cement and Biodentine in apexogenesis treatment in two 8-year-old patients, one with immature permanent molar diagnosed primarily with irreversible pulpitis and the other with partially vital maxillary central incisor. After access cavity preparation, partial pulpotomy in molar and full pulpotomy in central was performed, and the remaining pulps was capped with either Biodentine or CEM cement, in each tooth. The crowns were restored with composite filling material at the following visit. The post-operative radiographic and clinical examinations (approx. average of 16 months) showed that both treated teeth remained functional, with complete root development and apex formation. A calcified bridge was produced underneath the capping material. No further endodontic intervention was necessary. Considering the healing potential of immature vital pulps, the use of CEM cement and Biodentine for apexogenesis might be an applicable choice. These new endodontic biomaterials might be appropriate for vital pulp therapies in an immature tooth. However, further clinical studies with longer follow-up periods are recommended.

This report presents the case of a 25-year-old female patient without pre-existing medical condit... more This report presents the case of a 25-year-old female patient without pre-existing medical conditions. She experienced extraction of impacted right inferior third molar, which was fused to a supernumerary fourth molar, sharing its roots, crown and pulp chambers. Upon radiologic imaging and surgical planning, the tooth was extracted under local anesthesia without complications during or after surgery and on 1-year follow-up.

Background: Prediction of skeletal growth is necessary for growth modification and surgical ortho... more Background: Prediction of skeletal growth is necessary for growth modification and surgical orthodontic treatments and is usually done by assessing skeletal maturity indicators in hand-wrist radiographs. The use of growth stages of cervical vertebrae in lateral cephalograms has been suggested to avoid overexposure.