Gopala Krishna Ganta, Kamala Cheruvu, R. Ravi, R. Reddy
In the recent past, the demand for adult orthodontic treatment has increased multiple folds. As a repercussion of this stipulation, invisible orthodontic treatment has expanded its horizon. Efforts of using aesthetic brackets, wires, and lingual techniques to meet the expectations of adult patients have been practised. Though these techniques seemed to be promising in the initial days, soon decreased in popularity due to drawbacks associated with them. Clear aligners were offered as a newer and superior aesthetic alternative to overcome the difficulties associated with prior aesthetic approaches. These aligners are made up of different thermoplastic materials intended to move the malpositioned teeth in the desired corrected position following push mechanics. This article deals with new generation orthodontic treatment using aligners. It deals with history, generations, different materials used, and the distances yet to be travelled to become the benchmark and replace the existing conventional braces. This paper also gives a bird’s eye view of the method of aligner fabrication and the significant differences between the regular braces and aligners used in orthodontics.
{"title":"Clear aligners, the aesthetic solution: a review","authors":"Gopala Krishna Ganta, Kamala Cheruvu, R. Ravi, R. Reddy","doi":"10.37983/ijdm.2021.3304","DOIUrl":"https://doi.org/10.37983/ijdm.2021.3304","url":null,"abstract":"In the recent past, the demand for adult orthodontic treatment has increased multiple folds. As a repercussion of this stipulation, invisible orthodontic treatment has expanded its horizon. Efforts of using aesthetic brackets, wires, and lingual techniques to meet the expectations of adult patients have been practised. Though these techniques seemed to be promising in the initial days, soon decreased in popularity due to drawbacks associated with them. Clear aligners were offered as a newer and superior aesthetic alternative to overcome the difficulties associated with prior aesthetic approaches. These aligners are made up of different thermoplastic materials intended to move the malpositioned teeth in the desired corrected position following push mechanics. This article deals with new generation orthodontic treatment using aligners. It deals with history, generations, different materials used, and the distances yet to be travelled to become the benchmark and replace the existing conventional braces. This paper also gives a bird’s eye view of the method of aligner fabrication and the significant differences between the regular braces and aligners used in orthodontics.","PeriodicalId":132317,"journal":{"name":"International Journal of Dental Materials","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124633667","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}
Alaveni Manga Narsingoju, C. R. Kumar, G Harilal, Pavani Lukka
Dental implants have evolved as a standard treatment option for the replacement of missing teeth. Though this treatment modality provides a high level of patient satisfaction and success, it cannot be performed in all cases. Implant use is also restricted when the quality and quantity of bone at the edentulous site is limited, in addition to medically impaired patients. Among the conditions are remaining ridges with reduced interdental spacing, atrophic edentulous maxillary and mandibular ridges, and narrow ridges such as the mandibular incisor and maxillary lateral incisor area. A proper augmentation method for the placement of a regular diameter implant (3.75 to 7 mm) can improve the height and width of bone at such sites. However, bone augmentation and bone grafting procedures are rarely undertaken due to financial constraints, the risk of subjecting the patient to additional surgical procedures, the added time factor, or the guarded prognosis of the grafted site. In such cases, mini-implants are the choice of treatment. Mini-implants have the potential to be a viable alternative to standard-diameter implants in some circumstances. Benefits of mini-implants can be gained by replacing a single missing tooth, or preferably they must be used in multiples to retain fixed dental prostheses and might serve as an inexpensive, and efficient solution for retaining overdentures in selected cases.
{"title":"Mini-implants, mega solutions: a review","authors":"Alaveni Manga Narsingoju, C. R. Kumar, G Harilal, Pavani Lukka","doi":"10.37983/ijdm.2021.3305","DOIUrl":"https://doi.org/10.37983/ijdm.2021.3305","url":null,"abstract":"Dental implants have evolved as a standard treatment option for the replacement of missing teeth. Though this treatment modality provides a high level of patient satisfaction and success, it cannot be performed in all cases. Implant use is also restricted when the quality and quantity of bone at the edentulous site is limited, in addition to medically impaired patients. Among the conditions are remaining ridges with reduced interdental spacing, atrophic edentulous maxillary and mandibular ridges, and narrow ridges such as the mandibular incisor and maxillary lateral incisor area. A proper augmentation method for the placement of a regular diameter implant (3.75 to 7 mm) can improve the height and width of bone at such sites. However, bone augmentation and bone grafting procedures are rarely undertaken due to financial constraints, the risk of subjecting the patient to additional surgical procedures, the added time factor, or the guarded prognosis of the grafted site. In such cases, mini-implants are the choice of treatment. Mini-implants have the potential to be a viable alternative to standard-diameter implants in some circumstances. Benefits of mini-implants can be gained by replacing a single missing tooth, or preferably they must be used in multiples to retain fixed dental prostheses and might serve as an inexpensive, and efficient solution for retaining overdentures in selected cases.","PeriodicalId":132317,"journal":{"name":"International Journal of Dental Materials","volume":"114 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115742362","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}
Srikrishna Teja Marisetty, K. Varma, G. Sajjan, Vishal Babu Kolla, K. Kishore, Mohammad Raheem
Background: Restoring Endodontically treated teeth (ETT) can be challenging for most dentists, particularly when a significant tooth structure is lost. Depending on the coronal tooth structure remaining and the technique used (direct or indirect), endodontic anchorage can involve either a cast post and core or a prefabricated post. Aim: This study aimed to investigate the effect of different custom angulated, i.e.,0°,5°,10°,15° elastic glass fibre post (Everstick post) on fracture resistance of maxillary central incisors. Materials and methods: A total of forty-eight single-rooted maxillary central incisors were selected. All the samples were decoronated 2mm above the CEJ and endodontically treated. Post-space preparation was done for all the samples using peesoreamers ranging in size from 1-3. The samples were then randomly divided into four groups (n=12) based on the different angulations, i.e., the angle between the core and the long axis of the root, with 0°, 5°, 10°, and 15° angulations, respectively. The fit of each post in the root canal was verified. Before cementation, the coronal part of each post was bent according to their respective groups. Dual-cure resin cement was used for luting the posts and cured subsequently. The fracture resistance of all the samples was evaluated using the universal testing machine after they were mounted in self-cure acrylic resin blocks. The data were analysed using One- way ANOVA and Tukey’s post-hoc test. Results: Group I exhibited the highest mean fracture resistance compared to other groups. However, One-way ANOVA showed no significant differences (p=0.161) between the four groups. Conclusion: Everstick fibre posts are a preferable alternative for maxillary central incisors with core angulations up to 15° between coronal and radicular segments as they provide better fracture resistance with a more favourable stress distribution.
{"title":"Evaluation of different custom angulated elastic glass fibre post on fracture resistance of maxillary central incisor: an in vitrostudy","authors":"Srikrishna Teja Marisetty, K. Varma, G. Sajjan, Vishal Babu Kolla, K. Kishore, Mohammad Raheem","doi":"10.37983/ijdm.2021.3303","DOIUrl":"https://doi.org/10.37983/ijdm.2021.3303","url":null,"abstract":"Background: Restoring Endodontically treated teeth (ETT) can be challenging for most dentists, particularly when a significant tooth structure is lost. Depending on the coronal tooth structure remaining and the technique used (direct or indirect), endodontic anchorage can involve either a cast post and core or a prefabricated post.\u0000Aim: This study aimed to investigate the effect of different custom angulated, i.e.,0°,5°,10°,15° elastic glass fibre post (Everstick post) on fracture resistance of maxillary central incisors.\u0000Materials and methods: A total of forty-eight single-rooted maxillary central incisors were selected. All the samples were decoronated 2mm above the CEJ and endodontically treated. Post-space preparation was done for all the samples using peesoreamers ranging in size from 1-3. The samples were then randomly divided into four groups (n=12) based on the different angulations, i.e., the angle between the core and the long axis of the root, with 0°, 5°, 10°, and 15° angulations, respectively. The fit of each post in the root canal was verified. Before cementation, the coronal part of each post was bent according to their respective groups. Dual-cure resin cement was used for luting the posts and cured subsequently. The fracture resistance of all the samples was evaluated using the universal testing machine after they were mounted in self-cure acrylic resin blocks. The data were analysed using One- way ANOVA and Tukey’s post-hoc test.\u0000Results: Group I exhibited the highest mean fracture resistance compared to other groups. However, One-way ANOVA showed no significant differences (p=0.161) between the four groups.\u0000Conclusion: Everstick fibre posts are a preferable alternative for maxillary central incisors with core angulations up to 15° between coronal and radicular segments as they provide better fracture resistance with a more favourable stress distribution.","PeriodicalId":132317,"journal":{"name":"International Journal of Dental Materials","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129244072","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: Calcium phosphates (CPs) form hydroxyapatite (HA) in physiological solutions. These are commonly used to treat dentine hypersensitivity (DH) as they mimic the mineral composition of the natural tooth. Aim: The present study aims to characterise the apatite formation ability of a commercially available calcium phosphate TeethmateTM (TM) in physiological-like media. Materials and Methods: In this study, 4mm (D) x 6mm (L) cylindrical samples of TM were produced and immersed in tris(hydroxymethyl)aminomethane (TRIS) buffer (pH: 7.3) and artificial saliva (AS) (pH: 6.5) for up to 24 hours. This was followed by characterisation of the samples after immersion using 31P magic angle - nuclear magnetic resonance spectroscopy (MAS-NMR), X-ray powder diffraction (XRD) and dentine treated with the material using scanning electron microscopy (SEM). Results: 31P MAS-NMR and XRD analyses revealed that samples immersed in TRIS buffer solution formed hydroxyapatite within approximately 6 hours of immersion. This change was observed at around 12 hours for samples soaked in AS. The pH of the immersion media increased with increasing immersion time. SEM analysis showed a transitional phase formation of structures exhibiting plate-like morphology. Conclusion: This study shows that TM converts to HA in vitro rapidly and provides an effective option for the treatment of dentine hypersensitivity.
{"title":"In vitro hydroxyapatite formation of a tetracalcium phosphate and anhydrous dicalcium phosphate based dentine desensitiser: TRIS buffer vs artificial saliva","authors":"T. Duminis, S. Shahid","doi":"10.37983/ijdm.2021.3302","DOIUrl":"https://doi.org/10.37983/ijdm.2021.3302","url":null,"abstract":"Background: Calcium phosphates (CPs) form hydroxyapatite (HA) in physiological solutions. These are commonly used to treat dentine hypersensitivity (DH) as they mimic the mineral composition of the natural tooth.\u0000Aim: The present study aims to characterise the apatite formation ability of a commercially available calcium phosphate TeethmateTM (TM) in physiological-like media.\u0000Materials and Methods: In this study, 4mm (D) x 6mm (L) cylindrical samples of TM were produced and immersed in tris(hydroxymethyl)aminomethane (TRIS) buffer (pH: 7.3) and artificial saliva (AS) (pH: 6.5) for up to 24 hours. This was followed by characterisation of the samples after immersion using 31P magic angle - nuclear magnetic resonance spectroscopy (MAS-NMR), X-ray powder diffraction (XRD) and dentine treated with the material using scanning electron microscopy (SEM).\u0000Results: 31P MAS-NMR and XRD analyses revealed that samples immersed in TRIS buffer solution formed hydroxyapatite within approximately 6 hours of immersion. This change was observed at around 12 hours for samples soaked in AS. The pH of the immersion media increased with increasing immersion time. SEM analysis showed a transitional phase formation of structures exhibiting plate-like morphology.\u0000Conclusion: This study shows that TM converts to HA in vitro rapidly and provides an effective option for the treatment of dentine hypersensitivity.","PeriodicalId":132317,"journal":{"name":"International Journal of Dental Materials","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125959597","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}
Tharuni Thammareddy, Sujesh M, Ravikumar C, Srujana Zakkula
Today, novel coronavirus infection has become pandemic worldwide. It is the major cause of sickness from the common cold to severe acute respiratory syndrome in individuals. In a dental operatory, infections can be expedited through several routes like aerosol generation, contaminated surfaces, droplet splatter, oral fluids, and direct contact. Keeping in mind about the routes of transmission of COVID-19 (Coronavirus disease-19), dental practitioners are at higher risk of exposure and disease spread. Hence, this review article emphasizes the routes of transmission, risk factors, prophylactic and preventive measures. It also sights on alternative approaches to prosthodontic procedures to reduce the burden of COVID-19 infection in their community. Data acquisition was made using the keywords, COVID-19, infection control, prosthodontic risk factors in electronic databases like PubMed, Medline, ProQuest, etc. A manual search of several journals and books was also carried out, and only highly relevant articles were considered for the present review.
{"title":"Occupational risk factors and preventive measures for COVID-19 in prosthodontics","authors":"Tharuni Thammareddy, Sujesh M, Ravikumar C, Srujana Zakkula","doi":"10.37983/ijdm.2020.2405","DOIUrl":"https://doi.org/10.37983/ijdm.2020.2405","url":null,"abstract":"Today, novel coronavirus infection has become pandemic worldwide. It is the major cause of sickness from the common cold to severe acute respiratory syndrome in individuals. In a dental operatory, infections can be expedited through several routes like aerosol generation, contaminated surfaces, droplet splatter, oral fluids, and direct contact. Keeping in mind about the routes of transmission of COVID-19 (Coronavirus disease-19), dental practitioners are at higher risk of exposure and disease spread. Hence, this review article emphasizes the routes of transmission, risk factors, prophylactic and preventive measures. It also sights on alternative approaches to prosthodontic procedures to reduce the burden of COVID-19 infection in their community. Data acquisition was made using the keywords, COVID-19, infection control, prosthodontic risk factors in electronic databases like PubMed, Medline, ProQuest, etc. A manual search of several journals and books was also carried out, and only highly relevant articles were considered for the present review.","PeriodicalId":132317,"journal":{"name":"International Journal of Dental Materials","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125642072","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}
Sowmya Mudunuri, K. Varma, R. Satish, Manthena Sita Rama Kumar, Jetty Sai Dinesh, Pulidindi Anil Kumar
Fiber-reinforced composites (FRCs) are a group of non-metallic biomaterials characterized by good mechanical properties, such as high fatigue resistance and fracture toughness growing in popularity in several dental applications. FRCs are a combination of two materials: the reinforcing phase in the form of fibers, which are embedded into the other material, called the matrix phase. Factors influencing the properties of FRCs include fibre properties versus polymer matrix properties, impregnation of fibres in the resin, adhesion of fibres to the polymer matrix, quantity and direction of fibres, and location of the fibre-rich phase in construction. The most commonly used applications of FRCs are in removable dentures, minimally invasive fixed dental prostheses, periodontal splints, root canal posts, and orthodontic retainers. This article discusses in detail the applications of FRCs in endodontics, including root canal posts, reinforcement of restorative composites in restorations and core build-ups and splinting of teeth in dental trauma.
{"title":"Fiber-reinforced composites in endodontic practice: a review","authors":"Sowmya Mudunuri, K. Varma, R. Satish, Manthena Sita Rama Kumar, Jetty Sai Dinesh, Pulidindi Anil Kumar","doi":"10.37983/ijdm.2020.2404","DOIUrl":"https://doi.org/10.37983/ijdm.2020.2404","url":null,"abstract":"Fiber-reinforced composites (FRCs) are a group of non-metallic biomaterials characterized by good mechanical properties, such as high fatigue resistance and fracture toughness growing in popularity in several dental applications. FRCs are a combination of two materials: the reinforcing phase in the form of fibers, which are embedded into the other material, called the matrix phase. Factors influencing the properties of FRCs include fibre properties versus polymer matrix properties, impregnation of fibres in the resin, adhesion of fibres to the polymer matrix, quantity and direction of fibres, and location of the fibre-rich phase in construction. The most commonly used applications of FRCs are in removable dentures, minimally invasive fixed dental prostheses, periodontal splints, root canal posts, and orthodontic retainers. This article discusses in detail the applications of FRCs in endodontics, including root canal posts, reinforcement of restorative composites in restorations and core build-ups and splinting of teeth in dental trauma.","PeriodicalId":132317,"journal":{"name":"International Journal of Dental Materials","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129577396","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}
Gadde Praveen, Rama Krishna Alla, Yekula Premsagar, Gontla V Durga Harsha, P. VenkataKarteekVarma, Y. Reddy
Background: Bibliometric studies are important as they provide an overview of research and scientific activity in a specific field. But studies of this type to determine the characteristics of the most cited articles in dental materials journals are completely lacking. Aim: To analyze the characteristics of 100 most-cited articles in dental materials journals since its inception through April 2019. Material and methods: Google scholar database was used to retrieve the list of journals titled with the term ‘‘dental materials”. A search was then conducted under "Publication Name" for each of the selected journals, and the articles were grouped by the category "Times Cited". The 100 highly cited papers published in five journals were contemplated in the eventual inquiry. The final collection was subjected to further scrutiny to determine the nature and characteristics of the documented revelations regard to journal name, year of publication, authors and their country, type of article, and area of research. Results: The 100 most-cited articles were published between 1985 and 2016 with maximum publications during 2001-05. The number of citations was ranging from 1926to 304. Only Dental Materials (97), Dental Materials Journal (3), shared the list. The United States tops the list with 25 articles followed by Germany (12) and Belgium (11). Dental composites and adhesives were the most commonly addressed topics in dental materials journals. Conclusions: This bibliometric analysis connoted the evolving and interesting research trends in dental material science.
{"title":"A bibliometric analysis of the 100 most-cited articles in dental materials journals","authors":"Gadde Praveen, Rama Krishna Alla, Yekula Premsagar, Gontla V Durga Harsha, P. VenkataKarteekVarma, Y. Reddy","doi":"10.37983/ijdm.2020.2303","DOIUrl":"https://doi.org/10.37983/ijdm.2020.2303","url":null,"abstract":"Background: Bibliometric studies are important as they provide an overview of research and scientific activity in a specific field. But studies of this type to determine the characteristics of the most cited articles in dental materials journals are completely lacking.\u0000Aim: To analyze the characteristics of 100 most-cited articles in dental materials journals since its inception through April 2019.\u0000Material and methods: Google scholar database was used to retrieve the list of journals titled with the term ‘‘dental materials”. A search was then conducted under \"Publication Name\" for each of the selected journals, and the articles were grouped by the category \"Times Cited\". The 100 highly cited papers published in five journals were contemplated in the eventual inquiry. The final collection was subjected to further scrutiny to determine the nature and characteristics of the documented revelations regard to journal name, year of publication, authors and their country, type of article, and area of research.\u0000Results: The 100 most-cited articles were published between 1985 and 2016 with maximum publications during 2001-05. The number of citations was ranging from 1926to 304. Only Dental Materials (97), Dental Materials Journal (3), shared the list. The United States tops the list with 25 articles followed by Germany (12) and Belgium (11). Dental composites and adhesives were the most commonly addressed topics in dental materials journals.\u0000Conclusions: This bibliometric analysis connoted the evolving and interesting research trends in dental material science.","PeriodicalId":132317,"journal":{"name":"International Journal of Dental Materials","volume":"496 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116201136","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}
Sreeram Sharmista, G. S. Kumar, Yalavarthy Ravisankhar, K. Srinivas, Hari Krishna Mvs, Satyendra Kumar
Background: Excessive surface roughness on the denture base can adversely impact the oral health of the patient. Therefore, it is necessary to polish the denture before they are delivered to the patient. The abrasive and polishing agents should provide a smoother surface without affecting the physical and mechanical properties of denture bases. Aim: This study aims to examine and understand the potential of different polishing materials on surface roughness of acrylic denture base resins. Materials and methods: A total of 60 Heat-cure acrylic specimens (acrylic bars) were made and grouped into six groups. Control (no abrasive), Pumice (Micro-white), Eggshell powder, Seashell powder, Black sand powder, White sand powder are used as abrasive materials for polishing these specimens. These polished specimens were subjected to profilometer surface roughness analysis. Results: The acrylic specimens polished with eggshell powder on acrylic specimens showed the least surface roughness followed by black sand, white sand, pumice and seashell powders. Tukey HSD showed significant differences (p=0.000) between unpolished and polished specimens. Conclusion: Eggshell powder effectively reduced the surface roughness of denture base resin material. However, the surface roughness demonstrated by all the abrasive materials used was within the threshold limit (2 µm). Therefore, all the materials can be used as abrasives.
{"title":"Surface roughness of acrylic denture base resins polished with different abrasive agents: an in-vitrostudy","authors":"Sreeram Sharmista, G. S. Kumar, Yalavarthy Ravisankhar, K. Srinivas, Hari Krishna Mvs, Satyendra Kumar","doi":"10.37983/ijdm.2020.2304","DOIUrl":"https://doi.org/10.37983/ijdm.2020.2304","url":null,"abstract":"Background: Excessive surface roughness on the denture base can adversely impact the oral health of the patient. Therefore, it is necessary to polish the denture before they are delivered to the patient. The abrasive and polishing agents should provide a smoother surface without affecting the physical and mechanical properties of denture bases.\u0000Aim: This study aims to examine and understand the potential of different polishing materials on surface roughness of acrylic denture base resins.\u0000Materials and methods: A total of 60 Heat-cure acrylic specimens (acrylic bars) were made and grouped into six groups. Control (no abrasive), Pumice (Micro-white), Eggshell powder, Seashell powder, Black sand powder, White sand powder are used as abrasive materials for polishing these specimens. These polished specimens were subjected to profilometer surface roughness analysis.\u0000Results: The acrylic specimens polished with eggshell powder on acrylic specimens showed the least surface roughness followed by black sand, white sand, pumice and seashell powders. Tukey HSD showed significant differences (p=0.000) between unpolished and polished specimens.\u0000Conclusion: Eggshell powder effectively reduced the surface roughness of denture base resin material. However, the surface roughness demonstrated by all the abrasive materials used was within the threshold limit (2 µm). Therefore, all the materials can be used as abrasives.","PeriodicalId":132317,"journal":{"name":"International Journal of Dental Materials","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116612339","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: The goal of the endodontic treatment is to achieve a fluid-tight impervious seal to prevent the ingress of bacteria and the occurrence of any pathology in future. The endodontic sealer plays a crucial role in obtaining the hermetic seal by filling all the spaces and by binding to the root dentin and to the core obturating material, which is usually gutta-percha. Aim: This study aimed to compare the push-out bond strength of Endosequence BC sealer with bioceramic coated gutta-percha and non-bioceramic coated gutta-percha. Materials and methods: A total of 36 extracted human maxillary central incisors were decoronated to standardize the root length of 15mm. Working length was determined and Biomechanical preparation for all the samples was done with a Mtwo (VDW Company) rotary file till 40/.06. Samples were randomly divided into three groups containing 12 teeth in each group based on the obturation procedure, namely Group 1: Endosequence BC sealer along with Endosequence bioceramic coated gutta-percha (n=12), Group 2: Endosequence BC sealer along with normal gutta-percha (n=12), Group 3: AH Plus sealer along with normal gutta-percha. All the samples were obturated using single cone technique. The specimens were sectioned orthogonally at middle third to obtain three sections of 1mm thick. All the samples were subjected to the push-out bond strength test with the universal testing machine. The data were subjected to one-way Analysis of Variance (ANOVA) followed by post hoc analysis. Results: Samples obturated with Endosequence BC sealer with Endosequence bioceramic coated gutta-percha showed the maximum push-out bond strength followed by Group 3 and Group 2. One-way Anova showed significant differences (p=0.021) among the groups. In posthoc analysis, the specimens from group 1 exhibited significant differences (p=0.016) with the group 2 specimens. Conclusion: The push-out bond strength of Endosequence Bioceramic sealer with Endosequence Bioceramic coated gutta-percha was significantly higher than that of Endosequence Bioceramic sealer with normal gutta-percha and AH Plus sealer with normal gutta-percha.
{"title":"Comparison of push-out bond strength of bioceramic sealer with bioceramic coated and non-bioceramic coated Gutta-percha: an in vitrostudy","authors":"Srikanth Garikapati, Kalyan Satish R, G. Sajjan, Madhu Varma K, Vishal Babu Kolla, Rajashekar Ch","doi":"10.37983/ijdm.2020.2305","DOIUrl":"https://doi.org/10.37983/ijdm.2020.2305","url":null,"abstract":"Background: The goal of the endodontic treatment is to achieve a fluid-tight impervious seal to prevent the ingress of bacteria and the occurrence of any pathology in future. The endodontic sealer plays a crucial role in obtaining the hermetic seal by filling all the spaces and by binding to the root dentin and to the core obturating material, which is usually gutta-percha.\u0000Aim: This study aimed to compare the push-out bond strength of Endosequence BC sealer with bioceramic coated gutta-percha and non-bioceramic coated gutta-percha.\u0000Materials and methods: A total of 36 extracted human maxillary central incisors were decoronated to standardize the root length of 15mm. Working length was determined and Biomechanical preparation for all the samples was done with a Mtwo (VDW Company) rotary file till 40/.06. Samples were randomly divided into three groups containing 12 teeth in each group based on the obturation procedure, namely Group 1: Endosequence BC sealer along with Endosequence bioceramic coated gutta-percha (n=12), Group 2: Endosequence BC sealer along with normal gutta-percha (n=12), Group 3: AH Plus sealer along with normal gutta-percha. All the samples were obturated using single cone technique. The specimens were sectioned orthogonally at middle third to obtain three sections of 1mm thick. All the samples were subjected to the push-out bond strength test with the universal testing machine. The data were subjected to one-way Analysis of Variance (ANOVA) followed by post hoc analysis.\u0000Results: Samples obturated with Endosequence BC sealer with Endosequence bioceramic coated gutta-percha showed the maximum push-out bond strength followed by Group 3 and Group 2. One-way Anova showed significant differences (p=0.021) among the groups. In posthoc analysis, the specimens from group 1 exhibited significant differences (p=0.016) with the group 2 specimens.\u0000Conclusion: The push-out bond strength of Endosequence Bioceramic sealer with Endosequence Bioceramic coated gutta-percha was significantly higher than that of Endosequence Bioceramic sealer with normal gutta-percha and AH Plus sealer with normal gutta-percha.","PeriodicalId":132317,"journal":{"name":"International Journal of Dental Materials","volume":"605 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123249497","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}
A variety of instruments are available for the extirpation of the pulp and the instrumentation and preparation of the root canal. Recently, nickel-titanium (NiTi) alloy is utilised for the manufacturing of endodontic instruments. Compared to other metals, these alloys are highly flexible, which significantly enhances ease of canal shaping. This review article gives an account in the advances of NiTi endodontic instruments with an emphasis on metallurgical, mechanical properties, the design features of each generation with a special focus on the latest generations of NiTi instruments.
{"title":"Recent advances in metallurgy and design of rotary endodontic instruments: a review","authors":"A. Palekar, A. Vajpayee, B. Biradar","doi":"10.37983/ijdm.2020.2204","DOIUrl":"https://doi.org/10.37983/ijdm.2020.2204","url":null,"abstract":"A variety of instruments are available for the extirpation of the pulp and the instrumentation and preparation of the root canal. Recently, nickel-titanium (NiTi) alloy is utilised for the manufacturing of endodontic instruments. Compared to other metals, these alloys are highly flexible, which significantly enhances ease of canal shaping. This review article gives an account in the advances of NiTi endodontic instruments with an emphasis on metallurgical, mechanical properties, the design features of each generation with a special focus on the latest generations of NiTi instruments.","PeriodicalId":132317,"journal":{"name":"International Journal of Dental Materials","volume":"280 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125857206","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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