This article aims to focus on the brief knowledge about the anatomical and morphological variations of the root canal anatomy of the maxillary second molar. The present case report reveals the endodontic management of the four-rooted right maxillary second molar diagnosed with the help of cone-beam computed tomography (CBCT) imaging. The CBCT findings confirmed the presence of four roots (mesiobuccal, distobuccal, distopalatal, and mesiopalatal) and four root canals. This case report demonstrates the importance of CBCT which is a valuable tool for diagnosis and management of these complex root canal systems.
{"title":"Endodontic management of four-rooted maxillary second molar diagnosed using cone-beam computed tomography: a case report","authors":"R. Saini, V. Saini","doi":"10.4103/tdj.tdj_18_22","DOIUrl":"https://doi.org/10.4103/tdj.tdj_18_22","url":null,"abstract":"This article aims to focus on the brief knowledge about the anatomical and morphological variations of the root canal anatomy of the maxillary second molar. The present case report reveals the endodontic management of the four-rooted right maxillary second molar diagnosed with the help of cone-beam computed tomography (CBCT) imaging. The CBCT findings confirmed the presence of four roots (mesiobuccal, distobuccal, distopalatal, and mesiopalatal) and four root canals. This case report demonstrates the importance of CBCT which is a valuable tool for diagnosis and management of these complex root canal systems.","PeriodicalId":22324,"journal":{"name":"Tanta Dental Journal","volume":"22 1","pages":"72 - 74"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82771143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Background and aim Dental implant is a dental treatment that allow oral rehabilitation for partial and fully edentulous patients. Osseointegration is the factor that control success or failure of dental implant that can be improved by addition of different adjunctive biological materials. Platelet-rich fibrin (PRF) membrane plays a significant role in tissue regeneration and wound healing. Melatonin (MNL) is biological hormone that secreted from pineal gland and played an important role in human growth. Patients and methods The present controlled clinical trial was carried out to evaluate one-stage dental implant with local application of MNL gel versus PRF membrane as a biomimetic material clinically and radiographically. 30 female patients with missing mandibular premolars- molar were randomized to receive 30 dental implants. Group A (10 patient) control group with dental implant only, group B (10 patient) test group with application of PRF membrane and group C (10 patient) test group with application of MNL gel. Patients were followed up at baseline (before implant placement to record both gingival thickness and bone density and immediately after implant placement to record marginal bone loss), 2 weeks, and 6 months. Results At 6 months follow up, there were significant improvement in gingival thickness and bone density in PRF membrane and MNL gel groups, while the preservation of marginal bone level loss was significant in MNL gel group than other two groups. Conclusions The current results shown that PRF membrane and MNL gel can be used to improve both hard and soft tissue around implant with increased efficiency of MNL regarding marginal bone loss.
{"title":"Evaluation of local delivered platelet-rich fibrin versus Melatonin gel on the osseointegration of dental implant: a randomized controlled clinical trial","authors":"R. Ismail, O. Ahmed, Lobna A. Abdel-Aziz","doi":"10.4103/tdj.tdj_54_22","DOIUrl":"https://doi.org/10.4103/tdj.tdj_54_22","url":null,"abstract":"Background and aim Dental implant is a dental treatment that allow oral rehabilitation for partial and fully edentulous patients. Osseointegration is the factor that control success or failure of dental implant that can be improved by addition of different adjunctive biological materials. Platelet-rich fibrin (PRF) membrane plays a significant role in tissue regeneration and wound healing. Melatonin (MNL) is biological hormone that secreted from pineal gland and played an important role in human growth. Patients and methods The present controlled clinical trial was carried out to evaluate one-stage dental implant with local application of MNL gel versus PRF membrane as a biomimetic material clinically and radiographically. 30 female patients with missing mandibular premolars- molar were randomized to receive 30 dental implants. Group A (10 patient) control group with dental implant only, group B (10 patient) test group with application of PRF membrane and group C (10 patient) test group with application of MNL gel. Patients were followed up at baseline (before implant placement to record both gingival thickness and bone density and immediately after implant placement to record marginal bone loss), 2 weeks, and 6 months. Results At 6 months follow up, there were significant improvement in gingival thickness and bone density in PRF membrane and MNL gel groups, while the preservation of marginal bone level loss was significant in MNL gel group than other two groups. Conclusions The current results shown that PRF membrane and MNL gel can be used to improve both hard and soft tissue around implant with increased efficiency of MNL regarding marginal bone loss.","PeriodicalId":22324,"journal":{"name":"Tanta Dental Journal","volume":"123 1","pages":"47 - 53"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76676340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
EmanA H. Altabrizy, LobnaA A. ElGammal, MohamedA S. Attia, YusufA Haggag, AhmedM M. Badr
Background One of the cornerstone adjunctive properties for delivering an antimicrobial agent in nonsurgical periodontal therapy is to achieve sufficient concentration and proper durability. This study was conducted to evaluate and to compare the effect of spirulina gel versus spirulina nanogel clinically and immunologically in the nonsurgical treatment of stage II, grade B periodontitis. Methods 30 patients with a diagnosis of (stage II, grade B periodontitis) were randomly selected and divided into three groups, 10 patients in each group. Group (A) received scaling and root planing SRP with placebo gel 'methyl cellulose', group (B) received SRP with spirulina gel, and group (C) received SRP with spirulina nanogel. All the patients received one session full mouth SRP and immediate placement of the gel followed by frequent application after 1, 2, and 4 weeks. The following clinical parameters: bleeding on probing (BOP), probing pocket depth (PPD), and clinical attachment level (CAL) were evaluated at baseline (before treatment), 3 and 6 months. Also, immunological assessment of tumor necrosis factor-α (TNF-α) using enzyme linked immunosorbent assay (ELISA) was done. Results There was statistically significant clinical improvement in favor to group B and C at all-time intervals follow-up periods when compared with group A where (P < 0.05). The immunological assessment showed statistically significant difference in group B and C when compared with group A at 6 months. Conclusion Adjunctive application of spirulina gel or spirulina nanogel to conventional mechanical therapy improved the clinical and immunological parameters over the traditional treatment alone. However, the strategy of spirulina nanogel may represents a promising natural product as an adjunctive treatment of chronic periodontitis.
{"title":"The adjunctive effect of locally delivered spirulina gel versus spirulina nanoparticles gel to nonsurgical treatment of stage II, grade B periodontitis: a randomized, controlled, clinical trial","authors":"EmanA H. Altabrizy, LobnaA A. ElGammal, MohamedA S. Attia, YusufA Haggag, AhmedM M. Badr","doi":"10.4103/tdj.tdj_15_23","DOIUrl":"https://doi.org/10.4103/tdj.tdj_15_23","url":null,"abstract":"Background One of the cornerstone adjunctive properties for delivering an antimicrobial agent in nonsurgical periodontal therapy is to achieve sufficient concentration and proper durability. This study was conducted to evaluate and to compare the effect of spirulina gel versus spirulina nanogel clinically and immunologically in the nonsurgical treatment of stage II, grade B periodontitis. Methods 30 patients with a diagnosis of (stage II, grade B periodontitis) were randomly selected and divided into three groups, 10 patients in each group. Group (A) received scaling and root planing SRP with placebo gel 'methyl cellulose', group (B) received SRP with spirulina gel, and group (C) received SRP with spirulina nanogel. All the patients received one session full mouth SRP and immediate placement of the gel followed by frequent application after 1, 2, and 4 weeks. The following clinical parameters: bleeding on probing (BOP), probing pocket depth (PPD), and clinical attachment level (CAL) were evaluated at baseline (before treatment), 3 and 6 months. Also, immunological assessment of tumor necrosis factor-α (TNF-α) using enzyme linked immunosorbent assay (ELISA) was done. Results There was statistically significant clinical improvement in favor to group B and C at all-time intervals follow-up periods when compared with group A where (P < 0.05). The immunological assessment showed statistically significant difference in group B and C when compared with group A at 6 months. Conclusion Adjunctive application of spirulina gel or spirulina nanogel to conventional mechanical therapy improved the clinical and immunological parameters over the traditional treatment alone. However, the strategy of spirulina nanogel may represents a promising natural product as an adjunctive treatment of chronic periodontitis.","PeriodicalId":22324,"journal":{"name":"Tanta Dental Journal","volume":"270 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135494638","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Introduction Skeletal Class III is one of a complex sagittal interjaw relationship. It is the result of malrelation in sagittal position of one or both jaw bones or disproportionate ratio of their length. Objective This study was carried out to assess the effective mandibular and maxillary bases length in developing Class III malocclusion with high and low mandibular plane angles. Materials and methods Cross-sectional study was carried out on a selected sample of 75 lateral cephalometric radiographs of orthodontic patients of both sexes with age ranged from 6 to 12 years old. They were divided into three equal groups. Group 1: normal ANB and mandibular plane angles as a control group, group 2: skeletal Class III with low mandibular plane angles, and group 3: skeletal Class III with high mandibular plane angles. The sample was collected from patient record files at the clinic of the Orthodontic Department, Faculty of Dentistry, Tanta University, Egypt. Results A statistically significant difference was found in the effective maxillary length between group 1 and group 2 and 3. While effective mandibular length showed no statistically significant differences between the three groups. Conclusion Short maxillary base length is the main etiological factor for skeletal Class III malocclusion. While prominent mandibular base length has minimal effect in development of skeletal Class III malocclusion.
{"title":"Effective mandibular and maxillary base length in developing Class III malocclusions with high and low mandibular plane angles","authors":"Mourad Elhefnawy, M. AL-Shennawy, M. Ellaithy","doi":"10.4103/tdj.tdj_55_22","DOIUrl":"https://doi.org/10.4103/tdj.tdj_55_22","url":null,"abstract":"Introduction Skeletal Class III is one of a complex sagittal interjaw relationship. It is the result of malrelation in sagittal position of one or both jaw bones or disproportionate ratio of their length. Objective This study was carried out to assess the effective mandibular and maxillary bases length in developing Class III malocclusion with high and low mandibular plane angles. Materials and methods Cross-sectional study was carried out on a selected sample of 75 lateral cephalometric radiographs of orthodontic patients of both sexes with age ranged from 6 to 12 years old. They were divided into three equal groups. Group 1: normal ANB and mandibular plane angles as a control group, group 2: skeletal Class III with low mandibular plane angles, and group 3: skeletal Class III with high mandibular plane angles. The sample was collected from patient record files at the clinic of the Orthodontic Department, Faculty of Dentistry, Tanta University, Egypt. Results A statistically significant difference was found in the effective maxillary length between group 1 and group 2 and 3. While effective mandibular length showed no statistically significant differences between the three groups. Conclusion Short maxillary base length is the main etiological factor for skeletal Class III malocclusion. While prominent mandibular base length has minimal effect in development of skeletal Class III malocclusion.","PeriodicalId":22324,"journal":{"name":"Tanta Dental Journal","volume":"3 1","pages":"65 - 71"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85741433","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Background Salivary glands intensively deteriorate when exposed to radiotherapy with a resultant reduction in saliva production and developing xerostomia-associated complications. Botox, a commercially available botulinum neurotoxin A performs chemical denervation and degranulation of salivary acinar cells. Objective To investigate, histopathologically, whether pretreatment botulinum toxin could potentially protect the gland cells from the deleterious effects of ionizing radiation. Material and methods Twenty male Wistar rats were randomly assigned into two equal groups. Submandibular salivary glands were intraglandularly injected by either 2.5 U of botulinum in one group or an equal amount of saline in the other group before being exposed locally to 15 Gy of Cs137 γ-irradiation. Thirty days later, glands were harvested for histopathological assessment and calculation of acinar surface area. Results Botulinum-injected glands retained a near normal acinar architecture better than the saline group that showed marked serous atrophy and degeneration. Ductal and mucous cells were more radioresistant. A statistically significant difference existed between both groups in regards to serous acinar surface area P value less than 0.05. Conclusion Botulinum neurotoxin protected murine salivary gland acinar cells from ionizing radiation.
{"title":"Evaluation of the efficacy of botulinum toxin pretreatment for the management of radiotherapy-induced salivary gland dysfunction","authors":"HoussamH Hebish, EmanM Megahed, AdelM Raghib","doi":"10.4103/tdj.tdj_21_23","DOIUrl":"https://doi.org/10.4103/tdj.tdj_21_23","url":null,"abstract":"Background Salivary glands intensively deteriorate when exposed to radiotherapy with a resultant reduction in saliva production and developing xerostomia-associated complications. Botox, a commercially available botulinum neurotoxin A performs chemical denervation and degranulation of salivary acinar cells. Objective To investigate, histopathologically, whether pretreatment botulinum toxin could potentially protect the gland cells from the deleterious effects of ionizing radiation. Material and methods Twenty male Wistar rats were randomly assigned into two equal groups. Submandibular salivary glands were intraglandularly injected by either 2.5 U of botulinum in one group or an equal amount of saline in the other group before being exposed locally to 15 Gy of Cs137 γ-irradiation. Thirty days later, glands were harvested for histopathological assessment and calculation of acinar surface area. Results Botulinum-injected glands retained a near normal acinar architecture better than the saline group that showed marked serous atrophy and degeneration. Ductal and mucous cells were more radioresistant. A statistically significant difference existed between both groups in regards to serous acinar surface area P value less than 0.05. Conclusion Botulinum neurotoxin protected murine salivary gland acinar cells from ionizing radiation.","PeriodicalId":22324,"journal":{"name":"Tanta Dental Journal","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135494648","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Kiran Shital, Mavaddah Makhiya, Vinay Mulchandani, Mira Jani, Malay Trivedi, A. Joshi
Introduction A variety of methods, including hand instruments, high-speed and low-speed handpieces, chemomechanical techniques, air abrasion, ultrasonic instrumentation, and lasers, could be used to treat dental caries. The development of rotary devices like the micromotor and airotors was prompted by the traditional method of treating caries, which only used hand instruments and was painful and ineffective. Aim To evaluate the efficiency of conventional and disposable airotor in treating dental caries in children aged 6–12 years old. Materials and methods The split-mouth randomized controlled trial was designed on 60 teeth from 30 patients aged 6–12 years, involving caries removal techniques using conventional and disposable airotor. Ericson scale, stop-watch, animated emoji scale, and verbal pain scale were used to evaluate efficacy, time taken, patient acceptance, and pain threshold during caries removal. Results Intergroup comparison in terms of time taken for caries removal, patient acceptance and pain threshold showed a statistically significant difference between the conventional and disposable airotor concerning patient acceptance (P = 0.01) and pain threshold (P = 0.04). No statistically significant difference was found between the groups in caries removal efficacy (P = 0.55). Conclusion Caries removal time and clinical efficacy were almost comparable with disposable and conventional airotor. The disposable airotor had more patient acceptance and less pain threshold when compared to the conventional airotor.
{"title":"A comparison of caries removal technique using conventional and disposable airotor: a split-mouth study","authors":"Kiran Shital, Mavaddah Makhiya, Vinay Mulchandani, Mira Jani, Malay Trivedi, A. Joshi","doi":"10.4103/tdj.tdj_42_22","DOIUrl":"https://doi.org/10.4103/tdj.tdj_42_22","url":null,"abstract":"Introduction A variety of methods, including hand instruments, high-speed and low-speed handpieces, chemomechanical techniques, air abrasion, ultrasonic instrumentation, and lasers, could be used to treat dental caries. The development of rotary devices like the micromotor and airotors was prompted by the traditional method of treating caries, which only used hand instruments and was painful and ineffective. Aim To evaluate the efficiency of conventional and disposable airotor in treating dental caries in children aged 6–12 years old. Materials and methods The split-mouth randomized controlled trial was designed on 60 teeth from 30 patients aged 6–12 years, involving caries removal techniques using conventional and disposable airotor. Ericson scale, stop-watch, animated emoji scale, and verbal pain scale were used to evaluate efficacy, time taken, patient acceptance, and pain threshold during caries removal. Results Intergroup comparison in terms of time taken for caries removal, patient acceptance and pain threshold showed a statistically significant difference between the conventional and disposable airotor concerning patient acceptance (P = 0.01) and pain threshold (P = 0.04). No statistically significant difference was found between the groups in caries removal efficacy (P = 0.55). Conclusion Caries removal time and clinical efficacy were almost comparable with disposable and conventional airotor. The disposable airotor had more patient acceptance and less pain threshold when compared to the conventional airotor.","PeriodicalId":22324,"journal":{"name":"Tanta Dental Journal","volume":"71 1","pages":"1 - 5"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75960224","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Aim The aim of this in vitro study was to compare effect aging on microhardness of nanocomposite compared to conventional resin-based pit and fissure sealants. Materials and methods A total of 50 caries-free and intact permanent mandibular third molars were randomly divided into two groups (n = 25) according to the material used for pit and fissure sealants as follows: group I: flowable nanofilled composite (Polofil NHT flow). Group II: conventional resin-based fissure sealant Eco-S sealant. Each tooth was sectioned mesiodistally into two halves. One half was assigned to the immediate subgroup, and the other half was assigned to the aged subgroup by thermocycling. Vickers microhardness test was utilized to measure the microhardness of the different sealant materials immediately and after aging by thermocycling. Result The result of the study revealed that mean microhardness of nanofilled sealant before and after thermos-cycling was higher than that of conventional resin sealant. Conclusion Microhardness of nanofilled fissure sealant material not affected by aging with better mechanical properties.
{"title":"Effect of aging on microhardness of nanocomposite compared to conventional resin-based pit and fissure sealants","authors":"Hossam Mahmoud, M. Sheta","doi":"10.4103/tdj.tdj_49_22","DOIUrl":"https://doi.org/10.4103/tdj.tdj_49_22","url":null,"abstract":"Aim The aim of this in vitro study was to compare effect aging on microhardness of nanocomposite compared to conventional resin-based pit and fissure sealants. Materials and methods A total of 50 caries-free and intact permanent mandibular third molars were randomly divided into two groups (n = 25) according to the material used for pit and fissure sealants as follows: group I: flowable nanofilled composite (Polofil NHT flow). Group II: conventional resin-based fissure sealant Eco-S sealant. Each tooth was sectioned mesiodistally into two halves. One half was assigned to the immediate subgroup, and the other half was assigned to the aged subgroup by thermocycling. Vickers microhardness test was utilized to measure the microhardness of the different sealant materials immediately and after aging by thermocycling. Result The result of the study revealed that mean microhardness of nanofilled sealant before and after thermos-cycling was higher than that of conventional resin sealant. Conclusion Microhardness of nanofilled fissure sealant material not affected by aging with better mechanical properties.","PeriodicalId":22324,"journal":{"name":"Tanta Dental Journal","volume":"31 1","pages":"60 - 64"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76799862","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Aim The aim of this study was to assess the ability of 17% EDTA, 10% citric acid, 2.25% peracetic acid and 1% phytic acid (IP6) in removing smear layer from root canal system of human teeth using scanning electron microscopic analysis. Materials and methods Forty freshly extracted single canal human mandibular premolars with nearly straight mature fully developed roots were used in this study. Teeth were decoronated perpendicular to their long axises leaving roots ∼ 13 ± 1 mm. Chemomechanical preparation was done using ProTaper instrument in a crown down technique up to F4 master apical file (40/0.06) with irrigation of 2.5% sodium hypochlorite throughout instrumentation. Depending on the used final irrigation solution, the samples were divided randomly into four experimental groups (n = 10). Group I: 17% EDTA. Group II: 10% citric acid. Group III: 2.25% peracetic acid. Group IV: 1% phytic acid. The experimental time periods were 1 min. These samples were prepared and then observed by using scanning electron microscopic analysis for the absence or presence of smear layer, there by analyzing their cleaning effectiveness in the coronal, middle, and apical thirds of the root canal system. Results In intergroup comparison, there was no statistically significant difference among the four groups. In intragroup comparison, there was no statistically significant difference between coronal and middle thirds. However, there were statistically significant differences between apical third versus both coronal and middle thirds in all tested groups. Conclusions The four tested final irrigation solutions can effectively remove the smear layer from the coronal and middle root canal thirds, but they did not completely remove the smear layer at the apical one third.
{"title":"Efficacy of different chelating agents in smear layer removal","authors":"Ahmed Elsamra, A. Darrag, W. Ghoneim","doi":"10.4103/tdj.tdj_52_22","DOIUrl":"https://doi.org/10.4103/tdj.tdj_52_22","url":null,"abstract":"Aim The aim of this study was to assess the ability of 17% EDTA, 10% citric acid, 2.25% peracetic acid and 1% phytic acid (IP6) in removing smear layer from root canal system of human teeth using scanning electron microscopic analysis. Materials and methods Forty freshly extracted single canal human mandibular premolars with nearly straight mature fully developed roots were used in this study. Teeth were decoronated perpendicular to their long axises leaving roots ∼ 13 ± 1 mm. Chemomechanical preparation was done using ProTaper instrument in a crown down technique up to F4 master apical file (40/0.06) with irrigation of 2.5% sodium hypochlorite throughout instrumentation. Depending on the used final irrigation solution, the samples were divided randomly into four experimental groups (n = 10). Group I: 17% EDTA. Group II: 10% citric acid. Group III: 2.25% peracetic acid. Group IV: 1% phytic acid. The experimental time periods were 1 min. These samples were prepared and then observed by using scanning electron microscopic analysis for the absence or presence of smear layer, there by analyzing their cleaning effectiveness in the coronal, middle, and apical thirds of the root canal system. Results In intergroup comparison, there was no statistically significant difference among the four groups. In intragroup comparison, there was no statistically significant difference between coronal and middle thirds. However, there were statistically significant differences between apical third versus both coronal and middle thirds in all tested groups. Conclusions The four tested final irrigation solutions can effectively remove the smear layer from the coronal and middle root canal thirds, but they did not completely remove the smear layer at the apical one third.","PeriodicalId":22324,"journal":{"name":"Tanta Dental Journal","volume":"48 1","pages":"27 - 33"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84733261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Objectives Compare the bracket transfer accuracy between two IDB techniques; glue gun material and the conventional vacuum trays depending on the technology of IOSs (Trios 3). Patients and methods Thirty-two patients were randomly divided into two groups of 19 each (group I: glue gun tray, group II: vacuum tray). The brackets were placed in their predetermined positions by reference, the working model with attached brackets was scanned with intraoral scanner images (image 1). After bonding, scanning for the patient teeth with bonded brackets was performed (image 2). Image 1 and image 2 were superimposed to compare the transfer accuracy of both methods. A 5% significance level and χ2 test were used. Results No statistically significant difference was found between the two groups in the transverse and horizontal planes. In the vertical plane, group I was statistically significant higher (P ≤ 0.05) than group II. Conclusion The indirect bonding transfer process with glue gun trays resulted in bracket placement with high positional accuracy and a mild distal and gingival bias for all teeth groups.
{"title":"Comparison of bracket transfer accuracy between two indirect bonding techniques","authors":"RanaM Abu-Zaid, SafaaM Gaballah, NeveenM Fakhry","doi":"10.4103/tdj.tdj_6_23","DOIUrl":"https://doi.org/10.4103/tdj.tdj_6_23","url":null,"abstract":"Objectives Compare the bracket transfer accuracy between two IDB techniques; glue gun material and the conventional vacuum trays depending on the technology of IOSs (Trios 3). Patients and methods Thirty-two patients were randomly divided into two groups of 19 each (group I: glue gun tray, group II: vacuum tray). The brackets were placed in their predetermined positions by reference, the working model with attached brackets was scanned with intraoral scanner images (image 1). After bonding, scanning for the patient teeth with bonded brackets was performed (image 2). Image 1 and image 2 were superimposed to compare the transfer accuracy of both methods. A 5% significance level and χ2 test were used. Results No statistically significant difference was found between the two groups in the transverse and horizontal planes. In the vertical plane, group I was statistically significant higher (P ≤ 0.05) than group II. Conclusion The indirect bonding transfer process with glue gun trays resulted in bracket placement with high positional accuracy and a mild distal and gingival bias for all teeth groups.","PeriodicalId":22324,"journal":{"name":"Tanta Dental Journal","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135494646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
DoaaSoliman Othman, NahedAhmed Kashef, MohamedNabeel Mohamed El Gendy
Aim of the work The purpose of this study was to compare stress induced by the conventional design of lower unilateral free-end saddle and side plate with extra-coronal attachment (OT Cap attachment) and record the micro-strains induced by this stress. Materials and methods Strain gauge technology was used for strain analysis. A two-layer epoxy resin model with a unilateral distal extension base was used in this study with the second premolar as the last standing abutment. Model A: A lower metallic partial denture was made with an RPI clasp as a direct retainer on the second premolar and a double Aker clasp for cross-arch stabilization on the 1st and 2nd molars of the dentulous side, and the lingual plate served as a major connector. Model B: Lower metallic partial denture was made with the extra-coronal attachment (OT Cap attachment) as a direct retainer on the second premolar splinted with the first premolar by crowns. Stresses were measured vertically and obliquely at the buccal and lingual sides of the lower 2nd premolar, the edentulous ridge in the lower 2nd molar, and the double Aker in the dentulous side of model A. However, stresses were measured vertically and obliquely at the buccal and lingual side of the lower 2nd premolar and the edentulous ridge in the lower 2nd molar of model B. Data were collected, tabulated, and statistically analyzed using the SPSS software program. Results The present study revealed that stresses recorded at the abutment teeth and the ridge in the area of the lower second molar were higher in the case of conventional RPD than in OT attachment and the micro strains recorded around the abutment tooth were much more than micro-strains recorded around the residual ridge. Conclusions Mandibular partial denture using OT attachment can be considered as a prosthetic option for the management of class II Kennedy classification as it can improve the integrity of the alveolar bone of the abutment tooth and the residual ridge. Splinting of abutments reduces the stresses located in the buccal and lingual aspects of the abutment connection between the abutment and the OT attachment allowing better distribution of the stresses between the abutment tooth and the ridge vertically and obliquely.
{"title":"In vitro stress analysis of class II Kennedy conventional design and side plate with OT attachment","authors":"DoaaSoliman Othman, NahedAhmed Kashef, MohamedNabeel Mohamed El Gendy","doi":"10.4103/tdj.tdj_61_22","DOIUrl":"https://doi.org/10.4103/tdj.tdj_61_22","url":null,"abstract":"Aim of the work The purpose of this study was to compare stress induced by the conventional design of lower unilateral free-end saddle and side plate with extra-coronal attachment (OT Cap attachment) and record the micro-strains induced by this stress. Materials and methods Strain gauge technology was used for strain analysis. A two-layer epoxy resin model with a unilateral distal extension base was used in this study with the second premolar as the last standing abutment. Model A: A lower metallic partial denture was made with an RPI clasp as a direct retainer on the second premolar and a double Aker clasp for cross-arch stabilization on the 1st and 2nd molars of the dentulous side, and the lingual plate served as a major connector. Model B: Lower metallic partial denture was made with the extra-coronal attachment (OT Cap attachment) as a direct retainer on the second premolar splinted with the first premolar by crowns. Stresses were measured vertically and obliquely at the buccal and lingual sides of the lower 2nd premolar, the edentulous ridge in the lower 2nd molar, and the double Aker in the dentulous side of model A. However, stresses were measured vertically and obliquely at the buccal and lingual side of the lower 2nd premolar and the edentulous ridge in the lower 2nd molar of model B. Data were collected, tabulated, and statistically analyzed using the SPSS software program. Results The present study revealed that stresses recorded at the abutment teeth and the ridge in the area of the lower second molar were higher in the case of conventional RPD than in OT attachment and the micro strains recorded around the abutment tooth were much more than micro-strains recorded around the residual ridge. Conclusions Mandibular partial denture using OT attachment can be considered as a prosthetic option for the management of class II Kennedy classification as it can improve the integrity of the alveolar bone of the abutment tooth and the residual ridge. Splinting of abutments reduces the stresses located in the buccal and lingual aspects of the abutment connection between the abutment and the OT attachment allowing better distribution of the stresses between the abutment tooth and the ridge vertically and obliquely.","PeriodicalId":22324,"journal":{"name":"Tanta Dental Journal","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135494864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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