Pub Date : 2021-10-09DOI: 10.1177/23202068211044390
M. Eskitaşçıoğlu, Mehmet Şerif Akdeniz, B. Değirmenci
Aims: To evaluate the color changes that occur after accelerated aging in feldspathic ceramic crowns cemented with three different dual-cured resin cements. Materials and Methods: For each of the A2-colored RelyX U200, G-CEM LinkForce, and Panavia V5 cement groups, 45 dies from A2-colored zirconia blocks and 45 crowns from CEREC blocks were prepared. Color measurements after 24 h of cementation (T1) and after cycles of aging of 1750 (T2), 3500 (T3), and 7000 (T4) in the thermal cycle device were made using SpectroShade Micro device. The coordinates of the color were used L*, a*, and b* as base and the color change was calculated with ∆E00 in determining the color. One-way analysis of variance test was used to compare the times in terms of ∆L*, ∆a*, and ∆b* values. Results: It was found that ∆L* value decreased significantly in period of the T2, T3, and T4 times compared to T1 in all groups (P < .05), whereas the change between period of T2, T3, and T4 times was not significant (P > .05). The ∆a* value increased significantly in the period of T3 and T4 times compared to T1 in the only G-CEM LinkForce group, whereas the ∆b* value increased significantly in the period of T4 time compared to T1 in the only Panavia V5 group. The changes in ∆E00 values, which were observed in all period of times, were found to be between 0.43 and 1.04, 0.43 and 1.43, and 0.40 and 0.97 in RelyX U200, G-CEM LinkForce, and Panavia V5 groups, respectively. Conclusion: After accelerated aging, it was found that the color of all cements became darker and the G-CEM LinkForce group turned red and the Panavia V5 group turned yellow. However, it was found that the color changes that occurred were within clinically acceptable visible levels.
{"title":"Evaluation of Color Changes of Different Resin Cements in Feldspathic Ceramic Crowns After Accelerated Aging: An In Vitro Research","authors":"M. Eskitaşçıoğlu, Mehmet Şerif Akdeniz, B. Değirmenci","doi":"10.1177/23202068211044390","DOIUrl":"https://doi.org/10.1177/23202068211044390","url":null,"abstract":"Aims: To evaluate the color changes that occur after accelerated aging in feldspathic ceramic crowns cemented with three different dual-cured resin cements. Materials and Methods: For each of the A2-colored RelyX U200, G-CEM LinkForce, and Panavia V5 cement groups, 45 dies from A2-colored zirconia blocks and 45 crowns from CEREC blocks were prepared. Color measurements after 24 h of cementation (T1) and after cycles of aging of 1750 (T2), 3500 (T3), and 7000 (T4) in the thermal cycle device were made using SpectroShade Micro device. The coordinates of the color were used L*, a*, and b* as base and the color change was calculated with ∆E00 in determining the color. One-way analysis of variance test was used to compare the times in terms of ∆L*, ∆a*, and ∆b* values. Results: It was found that ∆L* value decreased significantly in period of the T2, T3, and T4 times compared to T1 in all groups (P < .05), whereas the change between period of T2, T3, and T4 times was not significant (P > .05). The ∆a* value increased significantly in the period of T3 and T4 times compared to T1 in the only G-CEM LinkForce group, whereas the ∆b* value increased significantly in the period of T4 time compared to T1 in the only Panavia V5 group. The changes in ∆E00 values, which were observed in all period of times, were found to be between 0.43 and 1.04, 0.43 and 1.43, and 0.40 and 0.97 in RelyX U200, G-CEM LinkForce, and Panavia V5 groups, respectively. Conclusion: After accelerated aging, it was found that the color of all cements became darker and the G-CEM LinkForce group turned red and the Panavia V5 group turned yellow. However, it was found that the color changes that occurred were within clinically acceptable visible levels.","PeriodicalId":43017,"journal":{"name":"Journal of Advanced Oral Research","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2021-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77377732","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}
Pub Date : 2021-09-17DOI: 10.1177/23202068211041785
Pronoy Mukhopadhyay, A. Khalikar, S. Wankhade, Suryakant Deogade
Aim: This study reviews the importance of selecting implant systems with connection designs that ensure better long-term prognosis of the prosthesis, thus placed. Materials and Methods: An electronic search on the PubMed database was done using MeSH keywords (“dental implant OR abutment OR connection AND microleakage OR bone loss”) to review English language articles published since the year 2011, which compared the crestal bone levels and microleakage around various implant–abutment connection designs (external hex, internal hex, and Morse taper). The search screened for articles on human trials and in vitro studies to be included within the review. Results: Based on the inclusion and exclusion criteria applied to the preliminary search, a total of four articles were included in the review for evaluating the influence of connection type on peri-implant bone loss, while nine articles were included to study the influence on bacterial leakage across the implant–abutment interface. Conclusion: Based on the studies reviewed, the conical connection design proved to be the most biologically stable junctional geometry because of the better microbial seal and the lesser micromovement observed in these types of implants during functional loading. Moreover, this review even emphasizes the need for more longitudinal clinical trials to assess the microbial seal of these connection designs within the actual oral environment to evaluate long-term changes in the peri-implant tissues, and subsequently even factor the prognosis of the planned prosthetic intervention.
{"title":"The Microbial Neck: A Biological Review of the Various Implant–Abutment Connections","authors":"Pronoy Mukhopadhyay, A. Khalikar, S. Wankhade, Suryakant Deogade","doi":"10.1177/23202068211041785","DOIUrl":"https://doi.org/10.1177/23202068211041785","url":null,"abstract":"Aim: This study reviews the importance of selecting implant systems with connection designs that ensure better long-term prognosis of the prosthesis, thus placed. Materials and Methods: An electronic search on the PubMed database was done using MeSH keywords (“dental implant OR abutment OR connection AND microleakage OR bone loss”) to review English language articles published since the year 2011, which compared the crestal bone levels and microleakage around various implant–abutment connection designs (external hex, internal hex, and Morse taper). The search screened for articles on human trials and in vitro studies to be included within the review. Results: Based on the inclusion and exclusion criteria applied to the preliminary search, a total of four articles were included in the review for evaluating the influence of connection type on peri-implant bone loss, while nine articles were included to study the influence on bacterial leakage across the implant–abutment interface. Conclusion: Based on the studies reviewed, the conical connection design proved to be the most biologically stable junctional geometry because of the better microbial seal and the lesser micromovement observed in these types of implants during functional loading. Moreover, this review even emphasizes the need for more longitudinal clinical trials to assess the microbial seal of these connection designs within the actual oral environment to evaluate long-term changes in the peri-implant tissues, and subsequently even factor the prognosis of the planned prosthetic intervention.","PeriodicalId":43017,"journal":{"name":"Journal of Advanced Oral Research","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2021-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89774145","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}
Pub Date : 2021-09-08DOI: 10.1177/23202068211039711
Z. G. B. Kurklu
Aim: To investigate the effect of sodium ascorbate (SA), an antioxidant and calcium hydroxide (Ca(OH)2), a buffering agent mixture, on the shear bond strength of a luting resin to dentin, and pH changes of the extraradicular medium solution after intracoronal bleaching with hydrogen peroxide. Materials and Methods: In this in vitro study, 60 human maxillary central incisors were randomly assigned into six groups (n: 10): Group 1: restored, no bleach; group 2: bleached, bonded immediately; group 3: bleached, treated with 10% SA applications before bonding; group 4: bleached, treated with calcium hydroxide applications before bonding; group 5: bleached, treated with CaOH2 and SA mixture applications before bonding; group 6: delay bonding by seven days. For bleach treatment in groups 2 to 6, intracoronal bleaching was performed with 35% hydrogen peroxide for four days. SA or CaOH2 or mixture of SA and CaOH2 were left in the access cavity for four days. Hybrid blocks, 4 mm × 4 mm wide × 2–mm thick, were luted with resin cements on dentin surface and then the specimens were subjected to shear bond strength testing. Analysis of variance and Tukey post hoc multiple comparison tests were applied (P < .05). Results: G2 and G4 showed significantly low bond strength values and they were lower than the other groups (P < .05). There were no significant differences between G1, G3, and G6 (P > .05). The pH values had risen markedly in the groups containing calcium hydroxide (G4 and G5) after four days (P < .05). Conclusion: The application of 10% SA or 10% SA and CaOH2 mixture were effective at reversing bleaching effects on bond strength. CaOH2 or CaOH2 and 10% SA mixture increased the external medium pH and were effective for alkalinization after intracoronal bleaching.
{"title":"Effect of Antioxidant and Buffering Agent Mixture on Dentin Shear Bond Strengths of Laminate Veneer and pH Change of External Medium After Intracoronal Bleaching","authors":"Z. G. B. Kurklu","doi":"10.1177/23202068211039711","DOIUrl":"https://doi.org/10.1177/23202068211039711","url":null,"abstract":"Aim: To investigate the effect of sodium ascorbate (SA), an antioxidant and calcium hydroxide (Ca(OH)2), a buffering agent mixture, on the shear bond strength of a luting resin to dentin, and pH changes of the extraradicular medium solution after intracoronal bleaching with hydrogen peroxide. Materials and Methods: In this in vitro study, 60 human maxillary central incisors were randomly assigned into six groups (n: 10): Group 1: restored, no bleach; group 2: bleached, bonded immediately; group 3: bleached, treated with 10% SA applications before bonding; group 4: bleached, treated with calcium hydroxide applications before bonding; group 5: bleached, treated with CaOH2 and SA mixture applications before bonding; group 6: delay bonding by seven days. For bleach treatment in groups 2 to 6, intracoronal bleaching was performed with 35% hydrogen peroxide for four days. SA or CaOH2 or mixture of SA and CaOH2 were left in the access cavity for four days. Hybrid blocks, 4 mm × 4 mm wide × 2–mm thick, were luted with resin cements on dentin surface and then the specimens were subjected to shear bond strength testing. Analysis of variance and Tukey post hoc multiple comparison tests were applied (P < .05). Results: G2 and G4 showed significantly low bond strength values and they were lower than the other groups (P < .05). There were no significant differences between G1, G3, and G6 (P > .05). The pH values had risen markedly in the groups containing calcium hydroxide (G4 and G5) after four days (P < .05). Conclusion: The application of 10% SA or 10% SA and CaOH2 mixture were effective at reversing bleaching effects on bond strength. CaOH2 or CaOH2 and 10% SA mixture increased the external medium pH and were effective for alkalinization after intracoronal bleaching.","PeriodicalId":43017,"journal":{"name":"Journal of Advanced Oral Research","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2021-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72408890","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}
Pub Date : 2021-09-06DOI: 10.1177/23202068211036139
Mostafa Godiny, Reza Hatam, R. Safari-Faramani, Atefeh Khavid, Mohammad Reza Rezaei
Aim: One of the main steps in a successful endodontic treatment is determining the correct working length (WL) of the root canal. In this regard, electronic apex locators (EAL) have been widely used for measuring the WL. The accuracy of EALs in determining the WL may be influenced by various factors. This study is aimed to evaluate the effects of apical patency, coronal preflaring, and calcium hydroxide on the accuracy of the EAL. Materials and Methods: In this in vitro study, 20 central incisor single-rooted human teeth with fully formed apex were considered. Then, samples were randomly divided into two study groups, ten samples in each group. The WL was determined and recorded at 0.5 mm distance to the apex using Root ZX apex locator before and after creating patency, coronal preflaring, and calcium hydroxide administration. All WLs were measured separately for each tooth and reviewed independently by two experienced operators with extensive experience in using EALs. Paired t test and Wilcoxon signed-rank test were applied and the significant level was at .05. Results: Statistical analysis of the obtained data showed a significant decline in the WL after apical patency and coronal preflaring (P < .05). Moreover, WL exhibited a significant enhancement after calcium hydroxide application (P < .05). Conclusion: Apical patency and coronal preflaring increased the accuracy of apex locators in determining the WL of the teeth. Besides, calcium hydroxide residues in the root canal reduced the accuracy of the apex locator.
{"title":"Influence of Apical Patency, Coronal Preflaring and Calcium Hydroxide on the Accuracy of Root ZX Apex Locator for Working Length Determination: An In Vitro Study","authors":"Mostafa Godiny, Reza Hatam, R. Safari-Faramani, Atefeh Khavid, Mohammad Reza Rezaei","doi":"10.1177/23202068211036139","DOIUrl":"https://doi.org/10.1177/23202068211036139","url":null,"abstract":"Aim: One of the main steps in a successful endodontic treatment is determining the correct working length (WL) of the root canal. In this regard, electronic apex locators (EAL) have been widely used for measuring the WL. The accuracy of EALs in determining the WL may be influenced by various factors. This study is aimed to evaluate the effects of apical patency, coronal preflaring, and calcium hydroxide on the accuracy of the EAL. Materials and Methods: In this in vitro study, 20 central incisor single-rooted human teeth with fully formed apex were considered. Then, samples were randomly divided into two study groups, ten samples in each group. The WL was determined and recorded at 0.5 mm distance to the apex using Root ZX apex locator before and after creating patency, coronal preflaring, and calcium hydroxide administration. All WLs were measured separately for each tooth and reviewed independently by two experienced operators with extensive experience in using EALs. Paired t test and Wilcoxon signed-rank test were applied and the significant level was at .05. Results: Statistical analysis of the obtained data showed a significant decline in the WL after apical patency and coronal preflaring (P < .05). Moreover, WL exhibited a significant enhancement after calcium hydroxide application (P < .05). Conclusion: Apical patency and coronal preflaring increased the accuracy of apex locators in determining the WL of the teeth. Besides, calcium hydroxide residues in the root canal reduced the accuracy of the apex locator.","PeriodicalId":43017,"journal":{"name":"Journal of Advanced Oral Research","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2021-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82361894","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}
Pub Date : 2021-08-27DOI: 10.1177/23202068211033742
B. Godhi, H. Jaishankar, H. T. Darla, Sonali Saha, Sumana M.N., S. Rudraswamy
Aim: The present trend in health care is toward the use of natural products for curing diseases. “Propolis” or bees wax is a natural, nontoxic resinous material collected by bees from exudates and buds of the plant. It has many beneficial biological and pharmacological properties such as antimicrobial, anti-inflammatory, antifungal, antiviral, and anticancer activities. Propolis is widely applied in dentistry as an anticariogenic agent, hypersensitivity reducing agent, and endodontic disinfection to name a few. The diverse phytochemical constituents of propolis are responsible for its valuable properties. Considering its vast potential, propolis has gained the attention of many researchers. The aim of this study is to offer a comprehensive evidence which will enable the readers and researchers to appreciate the prospects of the application of Indian propolis in present-day dentistry. Material and Methods: In vitro and in vivo studies on Indian propolis and its application in dentistry searches were performed in PubMed, Scopus, and Cochrane library databases up to December 2020. Results: The search identified 31 records; 12 full-text articles which met the eligibility criteria were assessed. Based on the results of in vitro studies, further in vivo studies need to be carried out to prove the feasibility of Indian propolis as an anticariogenic agent, a desensitizing agent, and an intracanal irrigant/medicament in the field of dentistry. Conclusion: Indian propolis has shown an immense amount of potentiality which demands for more clinical research to have sufficient evidence-based literature for future usage in oral health care.
{"title":"Indian Propolis Little Known and More to Explore for Dental Applications: A Review","authors":"B. Godhi, H. Jaishankar, H. T. Darla, Sonali Saha, Sumana M.N., S. Rudraswamy","doi":"10.1177/23202068211033742","DOIUrl":"https://doi.org/10.1177/23202068211033742","url":null,"abstract":"Aim: The present trend in health care is toward the use of natural products for curing diseases. “Propolis” or bees wax is a natural, nontoxic resinous material collected by bees from exudates and buds of the plant. It has many beneficial biological and pharmacological properties such as antimicrobial, anti-inflammatory, antifungal, antiviral, and anticancer activities. Propolis is widely applied in dentistry as an anticariogenic agent, hypersensitivity reducing agent, and endodontic disinfection to name a few. The diverse phytochemical constituents of propolis are responsible for its valuable properties. Considering its vast potential, propolis has gained the attention of many researchers. The aim of this study is to offer a comprehensive evidence which will enable the readers and researchers to appreciate the prospects of the application of Indian propolis in present-day dentistry. Material and Methods: In vitro and in vivo studies on Indian propolis and its application in dentistry searches were performed in PubMed, Scopus, and Cochrane library databases up to December 2020. Results: The search identified 31 records; 12 full-text articles which met the eligibility criteria were assessed. Based on the results of in vitro studies, further in vivo studies need to be carried out to prove the feasibility of Indian propolis as an anticariogenic agent, a desensitizing agent, and an intracanal irrigant/medicament in the field of dentistry. Conclusion: Indian propolis has shown an immense amount of potentiality which demands for more clinical research to have sufficient evidence-based literature for future usage in oral health care.","PeriodicalId":43017,"journal":{"name":"Journal of Advanced Oral Research","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2021-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85002647","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}
Pub Date : 2021-08-23DOI: 10.1177/23202068211037174
Emine Ünal, Faik Tugut
Aim: The aim of this study was to evaluate the effect of different cooling times on shear bond strength between cobalt–chromium metal frameworks fabricated by different techniques and veneering porcelain. Materials and Methods: One hundred twenty cobalt–chromium metal ceramic samples were obtained by three different techniques (casting, milling, and laser sintering). During the porcelain firing, fast and slow cooling protocols were applied. Ten specimens from each group were determined for all groups. The shear bond strength of the metal ceramic samples was measured by a universal testing machine with a constant crosshead speed of 0.5 mm/min. One sample from each group was evaluated by the scanning electron microscopy analysis in terms of surface change and fracture morphology. Variance analysis and Tukey test were used to analyze statistically significant differences between groups. Results: It was seen that the difference between the bond strengths of the metal frameworks obtained by different techniques was statistically significant (P < .05). All groups except for difference between the bond strengths of all the frameworks metal groups with G-Ceram porcelain were statistically significant (P < .05). The best bond strengths that were statistically significant were fast cooling G-Ceram (19.65 ± 2.65 MPa) with metal frameworks fabricated by laser sintering, fast cooling with metal framework fabricated by milling Noritake (19.17 ± 2.91 MPa), and the metal framework fabricated by casting was found to be slow cooling Noritake (12.99 ± 2.08 MPa) were seen. Conclusion: The porcelain cooling times had significant effect on the shear bond strength of porcelain to casting, milling and laser sintering alloys.
{"title":"The Effect of Cooling Times on the Bonding Between Porcelain and Metal Alloys Fabricated by Different Techniques: In Vitro Study","authors":"Emine Ünal, Faik Tugut","doi":"10.1177/23202068211037174","DOIUrl":"https://doi.org/10.1177/23202068211037174","url":null,"abstract":"Aim: The aim of this study was to evaluate the effect of different cooling times on shear bond strength between cobalt–chromium metal frameworks fabricated by different techniques and veneering porcelain. Materials and Methods: One hundred twenty cobalt–chromium metal ceramic samples were obtained by three different techniques (casting, milling, and laser sintering). During the porcelain firing, fast and slow cooling protocols were applied. Ten specimens from each group were determined for all groups. The shear bond strength of the metal ceramic samples was measured by a universal testing machine with a constant crosshead speed of 0.5 mm/min. One sample from each group was evaluated by the scanning electron microscopy analysis in terms of surface change and fracture morphology. Variance analysis and Tukey test were used to analyze statistically significant differences between groups. Results: It was seen that the difference between the bond strengths of the metal frameworks obtained by different techniques was statistically significant (P < .05). All groups except for difference between the bond strengths of all the frameworks metal groups with G-Ceram porcelain were statistically significant (P < .05). The best bond strengths that were statistically significant were fast cooling G-Ceram (19.65 ± 2.65 MPa) with metal frameworks fabricated by laser sintering, fast cooling with metal framework fabricated by milling Noritake (19.17 ± 2.91 MPa), and the metal framework fabricated by casting was found to be slow cooling Noritake (12.99 ± 2.08 MPa) were seen. Conclusion: The porcelain cooling times had significant effect on the shear bond strength of porcelain to casting, milling and laser sintering alloys.","PeriodicalId":43017,"journal":{"name":"Journal of Advanced Oral Research","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2021-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86826831","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}
Pub Date : 2021-08-14DOI: 10.1177/23202068211036148
G. Ozturk, M. Aydınbelge, H. Gumus
Aim: The aim of this study was to compare the effectiveness of different filling materials and obturation techniques for root canal obturation in primary teeth. Materials and Methods: Eighty maxillary primary incisors were included in this in vitro study. After biomechanical preparation, all samples were scanned using microcomputed tomography (micro-CT) and root canal volumes were calculated. Samples were grouped according to filling materials and obturation techniques, with ten samples in each group. The samples were filled with zinc oxide eugenol (ZOE) and Vitapex using four different obturation techniques (local anesthesia syringe, lentulo spiral, pastinject, and lentulo spiral–ultrasonic activation). After filling, samples were scanned a second time using micro-CT and root canal volumes were calculated. The statistical analysis was performed using SPSS version 24.0. Data were analyzed by Kruskal–Wallis and Mann–Whitney U tests. Results: When the ZOE and Vitapex were compared, it was observed that there were no significant differences between their postobturated volumes, percentage obturated volume (POV), internal void (IV), and percentage of internal void volume (PIV) (P > .05). The local anesthesia syringe group had a significantly lower postobturated volume and POV, and a significantly higher IV and PIV for both filling materials than that by the other groups (P < .05). There was no significant difference between the other obturation techniques (P > .05). For the local anesthesia syringe group, postobturated volume and POV were significantly higher and IV and PIV were significantly lower with Vitapex than with ZOE (P < .05). There was no significant difference between the other obturation techniques filled either with ZOE or Vitapex (P > .05). Conclusion: Except for the syringe technique, no difference was observed between the ZOE and Vitapex materials. The syringe technique used in the primary root canal filling was less effective than the other techniques, which had similar efficacy, and in this technique, more effective canal filling was achieved with Vitapex.
{"title":"Comparison of Various Root Canal Filling Materials and Obturation Techniques for Primary Teeth Using Microcomputed Tomography","authors":"G. Ozturk, M. Aydınbelge, H. Gumus","doi":"10.1177/23202068211036148","DOIUrl":"https://doi.org/10.1177/23202068211036148","url":null,"abstract":"Aim: The aim of this study was to compare the effectiveness of different filling materials and obturation techniques for root canal obturation in primary teeth. Materials and Methods: Eighty maxillary primary incisors were included in this in vitro study. After biomechanical preparation, all samples were scanned using microcomputed tomography (micro-CT) and root canal volumes were calculated. Samples were grouped according to filling materials and obturation techniques, with ten samples in each group. The samples were filled with zinc oxide eugenol (ZOE) and Vitapex using four different obturation techniques (local anesthesia syringe, lentulo spiral, pastinject, and lentulo spiral–ultrasonic activation). After filling, samples were scanned a second time using micro-CT and root canal volumes were calculated. The statistical analysis was performed using SPSS version 24.0. Data were analyzed by Kruskal–Wallis and Mann–Whitney U tests. Results: When the ZOE and Vitapex were compared, it was observed that there were no significant differences between their postobturated volumes, percentage obturated volume (POV), internal void (IV), and percentage of internal void volume (PIV) (P > .05). The local anesthesia syringe group had a significantly lower postobturated volume and POV, and a significantly higher IV and PIV for both filling materials than that by the other groups (P < .05). There was no significant difference between the other obturation techniques (P > .05). For the local anesthesia syringe group, postobturated volume and POV were significantly higher and IV and PIV were significantly lower with Vitapex than with ZOE (P < .05). There was no significant difference between the other obturation techniques filled either with ZOE or Vitapex (P > .05). Conclusion: Except for the syringe technique, no difference was observed between the ZOE and Vitapex materials. The syringe technique used in the primary root canal filling was less effective than the other techniques, which had similar efficacy, and in this technique, more effective canal filling was achieved with Vitapex.","PeriodicalId":43017,"journal":{"name":"Journal of Advanced Oral Research","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2021-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77289873","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}
Pub Date : 2021-08-09DOI: 10.1177/23202068211030143
Colleen Watson, L. Rhein, S. Fanelli
Aim: To compare following the Cuban Revolution, Cuba’s economy and civil society was transformed by the initiation of a program of nationalization and political consolidation. The Cuban government operates a national health system and assumes fiscal and administrative responsibility for the healthcare of its citizens. Other industrialized nations continue to surpass the US in health-related outcomes indicating areas of improvement in its healthcare system. Assessing the successes and failures as well as the advantages and disadvantages of other countries’ healthcare systems may be instrumental in the development of modifications to the organization and delivery system of healthcare in the US. This paper aims to report the information attained from previous literature as well as from first-hand observations from a public health trip to Cuba in order to compare the healthcare systems in Cuba and the United States. Materials and Methods: A group of New York University College of Dentistry faculty and students traveled to Cuba in April 2019 for professional research and professional meetings (CFR 515.564). While in Cuba, the researchers took written notes of the lecture-based material and conversations. Upon return to the United States, published literature was searched for the collection of any additional data and all qualitative data and quantitative data was compiled and organized. Since 1959, Cuba has made continuous adjustments and improvements to its universal, free and accessible healthcare system. Results: There have been notable improvements to the country’s public health status, such as the implementation of an immunization program and subsequent eradication of communicable diseases, such as polio and rubella. Additionally, the implementation of the National Program on Dentistry guarantees dental care to all Cuban children under the age of 19. Today, the Cuban National Health System (NHS) initiatives have evolved to combat the novel coronavirus (COVID-19) pandemic. Conclusion: Recognizing the advantages as well as the disadvantages of the Cuba’s National Health System (NHS) would be useful for future policymakers in the United States. Cuban approaches to health could be tailored to the United States environment to improve healthcare effectiveness and population health status in the future.
{"title":"An American Perspective of the Dental and Public Health Initiatives in Cuba","authors":"Colleen Watson, L. Rhein, S. Fanelli","doi":"10.1177/23202068211030143","DOIUrl":"https://doi.org/10.1177/23202068211030143","url":null,"abstract":"Aim: To compare following the Cuban Revolution, Cuba’s economy and civil society was transformed by the initiation of a program of nationalization and political consolidation. The Cuban government operates a national health system and assumes fiscal and administrative responsibility for the healthcare of its citizens. Other industrialized nations continue to surpass the US in health-related outcomes indicating areas of improvement in its healthcare system. Assessing the successes and failures as well as the advantages and disadvantages of other countries’ healthcare systems may be instrumental in the development of modifications to the organization and delivery system of healthcare in the US. This paper aims to report the information attained from previous literature as well as from first-hand observations from a public health trip to Cuba in order to compare the healthcare systems in Cuba and the United States. Materials and Methods: A group of New York University College of Dentistry faculty and students traveled to Cuba in April 2019 for professional research and professional meetings (CFR 515.564). While in Cuba, the researchers took written notes of the lecture-based material and conversations. Upon return to the United States, published literature was searched for the collection of any additional data and all qualitative data and quantitative data was compiled and organized. Since 1959, Cuba has made continuous adjustments and improvements to its universal, free and accessible healthcare system. Results: There have been notable improvements to the country’s public health status, such as the implementation of an immunization program and subsequent eradication of communicable diseases, such as polio and rubella. Additionally, the implementation of the National Program on Dentistry guarantees dental care to all Cuban children under the age of 19. Today, the Cuban National Health System (NHS) initiatives have evolved to combat the novel coronavirus (COVID-19) pandemic. Conclusion: Recognizing the advantages as well as the disadvantages of the Cuba’s National Health System (NHS) would be useful for future policymakers in the United States. Cuban approaches to health could be tailored to the United States environment to improve healthcare effectiveness and population health status in the future.","PeriodicalId":43017,"journal":{"name":"Journal of Advanced Oral Research","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2021-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73961382","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}
Pub Date : 2021-06-18DOI: 10.1177/23202068211022586
Masanobu Abe, A. Mitani, L. Zong, K. Hoshi, S. Yanagimoto
{"title":"The Challenge of Early Prevention of Periodontal Diseases in Japan","authors":"Masanobu Abe, A. Mitani, L. Zong, K. Hoshi, S. Yanagimoto","doi":"10.1177/23202068211022586","DOIUrl":"https://doi.org/10.1177/23202068211022586","url":null,"abstract":"","PeriodicalId":43017,"journal":{"name":"Journal of Advanced Oral Research","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2021-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79992788","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}
Pub Date : 2021-05-21DOI: 10.1177/23202068211018984
Ramesh Bharti, A. Tikku, A. Chandra, Prashant Gupta
Aim: To evaluate the effectiveness of photodynamic therapy (PDT), sodium hypochlorite (NaOCl) and chlorhexidine gluconate (CHO) in the endodontic re-treatment in the removing of microorganisms from previously filled infected root canals. Materials and Methods: The study samples consist of 54 root canal treated anterior teeth with apical periodontitis were randomly divided into three groups according to the disinfection protocol. Microbiological samples from the root canals were collected after removing the gutta-percha (S1) and following the endodontic re-treatment (S2) with either 5% NaOCl, 2% CHO or PDT procedure for 1 minute. Microbiological samples were cultivated on selective plates to assess the presence or absence of microbial growth and determine the average reduction of viable microorganisms. Results: Significant reduction in the total bacterial count in all the groups at post treatment (P < .001). PDT provided statistically higher (99.74%) elimination of Enterococcus faecalis in comparison to NaOCl (95%) and CHO (88%). Conclusions: The use of PDT in endodontic re-treatment led to the significant reduction of the remaining bacterial species. So, PDT can be used for routine endodontic disinfection in failed root canal cases.
{"title":"Antimicrobial Effectiveness of Photodynamic Therapy, 5% Sodium Hypochlorite and 2% Chlorhexidine Gluconate in Root Canal Treated Teeth: A Clinical Study","authors":"Ramesh Bharti, A. Tikku, A. Chandra, Prashant Gupta","doi":"10.1177/23202068211018984","DOIUrl":"https://doi.org/10.1177/23202068211018984","url":null,"abstract":"Aim: To evaluate the effectiveness of photodynamic therapy (PDT), sodium hypochlorite (NaOCl) and chlorhexidine gluconate (CHO) in the endodontic re-treatment in the removing of microorganisms from previously filled infected root canals. Materials and Methods: The study samples consist of 54 root canal treated anterior teeth with apical periodontitis were randomly divided into three groups according to the disinfection protocol. Microbiological samples from the root canals were collected after removing the gutta-percha (S1) and following the endodontic re-treatment (S2) with either 5% NaOCl, 2% CHO or PDT procedure for 1 minute. Microbiological samples were cultivated on selective plates to assess the presence or absence of microbial growth and determine the average reduction of viable microorganisms. Results: Significant reduction in the total bacterial count in all the groups at post treatment (P < .001). PDT provided statistically higher (99.74%) elimination of Enterococcus faecalis in comparison to NaOCl (95%) and CHO (88%). Conclusions: The use of PDT in endodontic re-treatment led to the significant reduction of the remaining bacterial species. So, PDT can be used for routine endodontic disinfection in failed root canal cases.","PeriodicalId":43017,"journal":{"name":"Journal of Advanced Oral Research","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2021-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91243394","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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