Background: Due to its invasiveness and length, bimaxillary orthognathic surgery causes highly excruciating pain in the oropharyngeal area for the patient. There are several ways to reduce this pain, including prescribing painkillers and anti-inflammatory drugs. The aim of this study was to evaluate the effect of photobiomodulation by a 940-nm laser on reducing pain in the oropharyngeal area after bimaxillary orthognathic surgery. Methods: This randomized clinical trial study was performed on 40 patients aged 17-40 years who were candidates for bimaxillary orthognathic surgery referred to the Department of Oral and Maxillofacial Surgery of Besat hospital in 2021. All patients in the intervention group underwent the photobiomodulation of the oropharyngeal area with a 940-nm diode laser immediately after the end of bimaxillary orthognathic surgery. Sore throat, jaw pain, pain when swallowing, and stridor were recorded in the first to fifth days after surgery. Finally, changes in the mean score of indices were compared within and between the two groups using repeated measure analysis of variance. Results: The mean age of patients in the intervention and control groups was 22.4±4.38 and 25.15±5.48 years, respectively (P=0.09). The pain score in the four areas studied in both intervention and control groups had a decreasing trend over time, which was statistically significant (P<0.001). In addition, the difference in the trend between the two groups was statistically significant so that in the intervention group, the decreasing trend was more severe (P<0.05). Eventually, a significant interaction was observed between the type of intervention and time in all four areas (P<0.05). Conclusions: The results showed that the use of a 940-nm diode laser led to a significant reduction in all four areas of sore throat, pain when swallowing, and stridor after bimaxillary orthognathic surgery.
{"title":"The Effect of Laser Diode 940 nm on Decreasing Oropharyngeal Pain After Bimaxillary Orthognathic Surgery: A Double-Blind Randomized Trial Study","authors":"M. Jamalpour, Gholam Reza Rouhani","doi":"10.34172/ajdr.2023.1613","DOIUrl":"https://doi.org/10.34172/ajdr.2023.1613","url":null,"abstract":"Background: Due to its invasiveness and length, bimaxillary orthognathic surgery causes highly excruciating pain in the oropharyngeal area for the patient. There are several ways to reduce this pain, including prescribing painkillers and anti-inflammatory drugs. The aim of this study was to evaluate the effect of photobiomodulation by a 940-nm laser on reducing pain in the oropharyngeal area after bimaxillary orthognathic surgery. Methods: This randomized clinical trial study was performed on 40 patients aged 17-40 years who were candidates for bimaxillary orthognathic surgery referred to the Department of Oral and Maxillofacial Surgery of Besat hospital in 2021. All patients in the intervention group underwent the photobiomodulation of the oropharyngeal area with a 940-nm diode laser immediately after the end of bimaxillary orthognathic surgery. Sore throat, jaw pain, pain when swallowing, and stridor were recorded in the first to fifth days after surgery. Finally, changes in the mean score of indices were compared within and between the two groups using repeated measure analysis of variance. Results: The mean age of patients in the intervention and control groups was 22.4±4.38 and 25.15±5.48 years, respectively (P=0.09). The pain score in the four areas studied in both intervention and control groups had a decreasing trend over time, which was statistically significant (P<0.001). In addition, the difference in the trend between the two groups was statistically significant so that in the intervention group, the decreasing trend was more severe (P<0.05). Eventually, a significant interaction was observed between the type of intervention and time in all four areas (P<0.05). Conclusions: The results showed that the use of a 940-nm diode laser led to a significant reduction in all four areas of sore throat, pain when swallowing, and stridor after bimaxillary orthognathic surgery.","PeriodicalId":8679,"journal":{"name":"Avicenna Journal of Dental Research","volume":"34 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80759761","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}
B. Asgartooran, Z. Khamverdi, Faezeh Soury, Shiva Kavousinejad
Background: The methods of increasing the longevity of dental burs by improving the mechanical properties of these surfaces, can increase their longevity. This study assessed the effect of diamond-like carbon (DLC) coating applied by the physical vapor deposition (PVD) technique on wear of diamond and tungsten carbide (TC) burs. Methods: In this in vitro study, 30 diamond and 30 TC burs were evaluated in four groups, including TC burs without coating (control), TC burs with a 3.5-µm DLC coating applied by the PVD technique, diamond burs without coating (control), and diamond burs with a 3.5-µm DLC coating applied by the PVD technique. The burs were weighed by a digital scale, underwent the pin-on-disc wear test, and were weighed again. The weight loss indicated the degree of wear in each group. For qualitative assessments, the surface of the burs was inspected under a stereomicroscope at×4 and×10 magnifications before wear, halfway through the test, and after the test. Finally, the data were analyzed by two-way ANOVA (α=0.05). Results: The effect of DLC coating was significant on the wear of burs (P=0.032), but the effect of the type of bur and their interaction effect on wear were not significant (P=0.151). A significant difference existed in wear among the four groups (P < 0.001), and the wear of coated burs was significantly lower than that of non-coated burs (P=0.012). Stereomicroscopic assessments revealed some residual diamond particles, the impression of dislodged particles and the path of wear on the surface of diamond burs, and the path of wear on the surface of TC burs. Conclusions: Overall, the DLC coating of diamond and TC dental burs by the PVD technique could increase their wear resistance irrespective of the bur type.
{"title":"Effect of Diamond-like Carbon Coating Applied by the Physical Vapor Deposition Technique on Wear of Diamond and Tungsten Carbide Dental Burs","authors":"B. Asgartooran, Z. Khamverdi, Faezeh Soury, Shiva Kavousinejad","doi":"10.34172/ajdr.2023.1624","DOIUrl":"https://doi.org/10.34172/ajdr.2023.1624","url":null,"abstract":"Background: The methods of increasing the longevity of dental burs by improving the mechanical properties of these surfaces, can increase their longevity. This study assessed the effect of diamond-like carbon (DLC) coating applied by the physical vapor deposition (PVD) technique on wear of diamond and tungsten carbide (TC) burs. Methods: In this in vitro study, 30 diamond and 30 TC burs were evaluated in four groups, including TC burs without coating (control), TC burs with a 3.5-µm DLC coating applied by the PVD technique, diamond burs without coating (control), and diamond burs with a 3.5-µm DLC coating applied by the PVD technique. The burs were weighed by a digital scale, underwent the pin-on-disc wear test, and were weighed again. The weight loss indicated the degree of wear in each group. For qualitative assessments, the surface of the burs was inspected under a stereomicroscope at×4 and×10 magnifications before wear, halfway through the test, and after the test. Finally, the data were analyzed by two-way ANOVA (α=0.05). Results: The effect of DLC coating was significant on the wear of burs (P=0.032), but the effect of the type of bur and their interaction effect on wear were not significant (P=0.151). A significant difference existed in wear among the four groups (P < 0.001), and the wear of coated burs was significantly lower than that of non-coated burs (P=0.012). Stereomicroscopic assessments revealed some residual diamond particles, the impression of dislodged particles and the path of wear on the surface of diamond burs, and the path of wear on the surface of TC burs. Conclusions: Overall, the DLC coating of diamond and TC dental burs by the PVD technique could increase their wear resistance irrespective of the bur type.","PeriodicalId":8679,"journal":{"name":"Avicenna Journal of Dental Research","volume":"40 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77305865","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}
Adenoid cystic carcinoma (ACC) is a slowly developing malignant tumor of the salivary glands, occurring more commonly in minor salivary glands and rarely in parotid glands. It has the potential of retrograde perineural spread to the adjacent structures and spaces. Here we report a rare case of ACC of the parotid gland extended to the infratemporal fossa with perineural and vascular invasion, reflecting the advanced stage of the disease. After consulting with ENT specialists and radiation oncologists, palliative surgery was performed followed by adjuvant radio/chemo therapy.
{"title":"Adenoid Cystic Carcinoma of Parotid Gland with Infratemporal Extension: A Rare Case Report","authors":"M. Jamalpour, Tannaz Rasipour","doi":"10.34172/ajdr.2023.1652","DOIUrl":"https://doi.org/10.34172/ajdr.2023.1652","url":null,"abstract":"Adenoid cystic carcinoma (ACC) is a slowly developing malignant tumor of the salivary glands, occurring more commonly in minor salivary glands and rarely in parotid glands. It has the potential of retrograde perineural spread to the adjacent structures and spaces. Here we report a rare case of ACC of the parotid gland extended to the infratemporal fossa with perineural and vascular invasion, reflecting the advanced stage of the disease. After consulting with ENT specialists and radiation oncologists, palliative surgery was performed followed by adjuvant radio/chemo therapy.","PeriodicalId":8679,"journal":{"name":"Avicenna Journal of Dental Research","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87140060","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}
G. Gupta, D. Gupta, P. Gupta, Parth Shah, Abhishek Khairwa
Catering a tooth-colored restoration in a single sitting is the fundamental objective of chairside digital dentistry with computer-aided design/computer-assisted manufacturing (CAD/CAM) technology, which became a legitimate reality with the initiation of ceramic reconstruction (CEREC) workflow. CAD/CAM dentistry has evolved through an amalgamation of diverse software and hardware upgrades since its launch to a viable chairside technology that allows pediatric dentists to treat patients in a single visit. Nowadays, CAD/CAM of dental restorations has become an ingrained fabrication process, especially for zirconium restorations. In this report, we have presented three cases to exemplify the clinical use of chairside digital dentistry (i.e., CEREC workflow) for the fabrication of a customized zirconium restoration in a single sitting to restore form, function, and occlusion for grossly decayed and decalcified primary molars, as well as esthetics for primary anterior teeth with utmost comfort of child patients with single-sitting treatment modality.
{"title":"Customized Zirconia Crown in Pediatric Dentistry From Concept to Reality","authors":"G. Gupta, D. Gupta, P. Gupta, Parth Shah, Abhishek Khairwa","doi":"10.34172/ajdr.2023.1589","DOIUrl":"https://doi.org/10.34172/ajdr.2023.1589","url":null,"abstract":"Catering a tooth-colored restoration in a single sitting is the fundamental objective of chairside digital dentistry with computer-aided design/computer-assisted manufacturing (CAD/CAM) technology, which became a legitimate reality with the initiation of ceramic reconstruction (CEREC) workflow. CAD/CAM dentistry has evolved through an amalgamation of diverse software and hardware upgrades since its launch to a viable chairside technology that allows pediatric dentists to treat patients in a single visit. Nowadays, CAD/CAM of dental restorations has become an ingrained fabrication process, especially for zirconium restorations. In this report, we have presented three cases to exemplify the clinical use of chairside digital dentistry (i.e., CEREC workflow) for the fabrication of a customized zirconium restoration in a single sitting to restore form, function, and occlusion for grossly decayed and decalcified primary molars, as well as esthetics for primary anterior teeth with utmost comfort of child patients with single-sitting treatment modality.","PeriodicalId":8679,"journal":{"name":"Avicenna Journal of Dental Research","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82944030","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: Delay in the processing of photostimulable phosphor storage plates (PSP) is a common occurrence in crowded clinics. Accordingly, the effects of processing delays in different coverages on the image quality of photostimulable PSPs were investigated with Acteon and Digora scanners. Methods: Three Acteon (group A) and three Digora (group B) PSPs were used in this in vitro study. Each group had three subgroups according to three coverages, including protective box (A1 , B1 ), semitransparent (A2 , B2 ), and original dark case plates (A3 , B3 ). An aluminum step wedge was subjected to constant exposure conditions. The exposed plates were immediately processed with their corresponding scanner device (the golden standard), 5, 10, 20, 30, 40, and 60 minutes after exposure. The average gray level information of the 2nd, 5th, and 8th steps of the Al wedge was considered as the mean gray values (MGVs) of each wedge. The difference between the gray values of the 8th and 2nd steps was measured as image contrast. Results: There was a significant difference between the contrast and MGVs of Acteon and Digora PSPs at all processing delay times (P<0.05). In general, there was no significant difference in the image MGVs and contrast between subgroups in any of the scanners (total P>0.05). In each subgroup, MGVs increased, while contrast decreased by increasing the processing delay time; the difference was significant except for the MGVs in the first 5 minutes of A1 (P=0.12) and A3 (P=0.06). Conclusions: Thus, the type of scanner was effective on image quality; the type of PSP coating in the first few minutes could affect the rate of image quality loss. However, the scan time had a greater effect on the amount of image loss.
{"title":"Effects of Processing Delays in Different Coverages on the Image Quality of Photostimulable Phosphor Plates With Acteon and Digora Scanners","authors":"R. Bardal, M. Mobini, N. Hemmati","doi":"10.34172/ajdr.2022.557","DOIUrl":"https://doi.org/10.34172/ajdr.2022.557","url":null,"abstract":"Background: Delay in the processing of photostimulable phosphor storage plates (PSP) is a common occurrence in crowded clinics. Accordingly, the effects of processing delays in different coverages on the image quality of photostimulable PSPs were investigated with Acteon and Digora scanners. Methods: Three Acteon (group A) and three Digora (group B) PSPs were used in this in vitro study. Each group had three subgroups according to three coverages, including protective box (A1 , B1 ), semitransparent (A2 , B2 ), and original dark case plates (A3 , B3 ). An aluminum step wedge was subjected to constant exposure conditions. The exposed plates were immediately processed with their corresponding scanner device (the golden standard), 5, 10, 20, 30, 40, and 60 minutes after exposure. The average gray level information of the 2nd, 5th, and 8th steps of the Al wedge was considered as the mean gray values (MGVs) of each wedge. The difference between the gray values of the 8th and 2nd steps was measured as image contrast. Results: There was a significant difference between the contrast and MGVs of Acteon and Digora PSPs at all processing delay times (P<0.05). In general, there was no significant difference in the image MGVs and contrast between subgroups in any of the scanners (total P>0.05). In each subgroup, MGVs increased, while contrast decreased by increasing the processing delay time; the difference was significant except for the MGVs in the first 5 minutes of A1 (P=0.12) and A3 (P=0.06). Conclusions: Thus, the type of scanner was effective on image quality; the type of PSP coating in the first few minutes could affect the rate of image quality loss. However, the scan time had a greater effect on the amount of image loss.","PeriodicalId":8679,"journal":{"name":"Avicenna Journal of Dental Research","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79295928","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}
D. Goodarzi Pour, Shaghayegh Golshani, Y. Kheirandish, Sara Aliasghari
Background: This study aimed to evaluate the cone-beam computed tomography (CBCT) technique considering its reliability to diagnose resorption due to maxillary impacted canine. Methods: In this cross-sectional study, 68 CBCT images were observed by two oral and maxillofacial radiologists. The position of the impacted maxillary canine was assessed, and the severity of root resorption in adjacent teeth was determined in two rounds by viewing. Finally, statistical analyses were performed according to the percentage of agreement, intra-class correlation coefficient, and kappa. The data sheets were filled out by two radiologists who observed the CBCT images in two separate weeks and recorded their opinions about the position of the crown and root of the impacted maxillary canine. Further, four adjacent teeth were examined for root resorption. Results: In most cases, no root resorption was observed in the lateral, central, and first premolars; however, the reported percentage of root resorption in the lateral premolar was higher than that of the others, and no root resorption was reported in the second premolars. Agreement on crown and root position was reported to be above 90% in all observations. In addition, the percentage of agreement was 98.5%, 95.6%, 98.5%, and 100% for root resorption, central incisor, lateral incisor, the first premolar, and the second premolar, respectively. Maxillary impacted canines were examined considering root resorption in adjacent teeth using CBCT, and its interpretation was reliable. Conclusions: Utilization of CBCT provides a worthy data about the impacted maxillary canine localization and effects on adjacent teeth, for more explanation and treatment of these cases.
{"title":"Reliability of Cone-Beam Computed Tomography in Diagnosis of Root Resorption Due to Impacted Maxillary Canine","authors":"D. Goodarzi Pour, Shaghayegh Golshani, Y. Kheirandish, Sara Aliasghari","doi":"10.34172/ajdr.2022.1591","DOIUrl":"https://doi.org/10.34172/ajdr.2022.1591","url":null,"abstract":"Background: This study aimed to evaluate the cone-beam computed tomography (CBCT) technique considering its reliability to diagnose resorption due to maxillary impacted canine. Methods: In this cross-sectional study, 68 CBCT images were observed by two oral and maxillofacial radiologists. The position of the impacted maxillary canine was assessed, and the severity of root resorption in adjacent teeth was determined in two rounds by viewing. Finally, statistical analyses were performed according to the percentage of agreement, intra-class correlation coefficient, and kappa. The data sheets were filled out by two radiologists who observed the CBCT images in two separate weeks and recorded their opinions about the position of the crown and root of the impacted maxillary canine. Further, four adjacent teeth were examined for root resorption. Results: In most cases, no root resorption was observed in the lateral, central, and first premolars; however, the reported percentage of root resorption in the lateral premolar was higher than that of the others, and no root resorption was reported in the second premolars. Agreement on crown and root position was reported to be above 90% in all observations. In addition, the percentage of agreement was 98.5%, 95.6%, 98.5%, and 100% for root resorption, central incisor, lateral incisor, the first premolar, and the second premolar, respectively. Maxillary impacted canines were examined considering root resorption in adjacent teeth using CBCT, and its interpretation was reliable. Conclusions: Utilization of CBCT provides a worthy data about the impacted maxillary canine localization and effects on adjacent teeth, for more explanation and treatment of these cases.","PeriodicalId":8679,"journal":{"name":"Avicenna Journal of Dental Research","volume":"85 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90678975","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. Darwich, Abeer Aljareh, Omar Aladel, S. Szávai, H. Nazha
Background: This study aimed to evaluate the influence of inlays/onlays and their material on stress distribution in mandibular molars with large cavities, using finite element analysis (FEA). Methods: 3D models of the first mandibular molar were created. Then, a mesio-occluso-distal cavity was created, and cusps were reduced (1.5 mm for buccal cusps and 1 mm for lingual cusps). The restorations were: inlay, onlay that covered buccal cusps (B models), and onlay that covered all cusps (LB models). Inlays and onlays were represented by two materials: nanofill composite resin and polymer-infiltrated ceramic network (PICN). Vertical load of 600 N was applied and von Mises stresses were calculated. Results: Inlay models showed higher stress concentration in tooth structures than onlay models. Composite resin inlays and onlays transmitted most of the stress to adjacent structures. On the other hand, PICN inlays/onlays absorbed most of stress and transmitted less stress to dental structures than composite resin restorations. Moreover, stress concentrations in PICN onlay models (B-buccal cusps and LB-all cusps) were similar, while composite resin LB onlay showed higher stress concentration in dental structures than composite resin B onlay. Conclusions: Onlays showed better stress distribution than inlays. PICN might be a suitable choice as a restorative material of inlay/onlay for large cavities in molars, while the composite resin is unfavorable material for such restorations in terms of stress redistribution in dental structures.
{"title":"Influence of Inlays/Onlays and Their Material on Stress Distribution in Mandibular Molars: Finite Element Analysis","authors":"A. Darwich, Abeer Aljareh, Omar Aladel, S. Szávai, H. Nazha","doi":"10.34172/ajdr.2022.578","DOIUrl":"https://doi.org/10.34172/ajdr.2022.578","url":null,"abstract":"Background: This study aimed to evaluate the influence of inlays/onlays and their material on stress distribution in mandibular molars with large cavities, using finite element analysis (FEA). Methods: 3D models of the first mandibular molar were created. Then, a mesio-occluso-distal cavity was created, and cusps were reduced (1.5 mm for buccal cusps and 1 mm for lingual cusps). The restorations were: inlay, onlay that covered buccal cusps (B models), and onlay that covered all cusps (LB models). Inlays and onlays were represented by two materials: nanofill composite resin and polymer-infiltrated ceramic network (PICN). Vertical load of 600 N was applied and von Mises stresses were calculated. Results: Inlay models showed higher stress concentration in tooth structures than onlay models. Composite resin inlays and onlays transmitted most of the stress to adjacent structures. On the other hand, PICN inlays/onlays absorbed most of stress and transmitted less stress to dental structures than composite resin restorations. Moreover, stress concentrations in PICN onlay models (B-buccal cusps and LB-all cusps) were similar, while composite resin LB onlay showed higher stress concentration in dental structures than composite resin B onlay. Conclusions: Onlays showed better stress distribution than inlays. PICN might be a suitable choice as a restorative material of inlay/onlay for large cavities in molars, while the composite resin is unfavorable material for such restorations in terms of stress redistribution in dental structures.","PeriodicalId":8679,"journal":{"name":"Avicenna Journal of Dental Research","volume":"110 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74826928","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}
S. Bohlouli, Mahdiyeh Esmaeilzadeh, H. Samadi kafil, R. Negahdari, B. Shokouhi, Z. Aghazadeh
Background: The oral route is one of the main portals for Helicobacter pylori transmission. The elimination of this bacterial species from the oral cavity might be useful in oral health and decreasing infections due to H. pylori. This study aimed to evaluate the effect of a liquorice-extract-containing mouthwash at different concentrations on the proliferation of H. pylori in vitro. Methods: H. pylori bacterial species was cultured, and the isolated strains from the specific culture medium were prepared for the welling procedures. The liquorice (Glycyrrhiza glabra) mouthwash at 12.5% and 25% concentrations was added to the case group wells at 1,1/2,1/4,1/8, and 1/16 dilutions. In the control group, regular daily mouthwash containing cetylpyridinium chloride and sodium fluoride components was used. The growth inhibition zones were analyzed in the study groups. The data were analyzed by SPSS and reported using descriptive statistics (means±standard deviation). Results: In both the mouthwashes containing 25% and 12.5% concentration, the means of growth inhibition zones at 1, 1/2, 1/4, 1/8, and 1/16 dilutions were larger than those in the control group. Further, the largest growth inhibition zone was seen with the undiluted 25% mouthwash. There were no significant differences in the H. pylori growth inhibition zones between 25% and 12.5% mouthwashes (P=0.14). Conclusions: Mouthwashes containing liquorice extracts inhibited the growth of H. pylori more significantly than mouthwash with no liquorice extract. Therefore, it is suggested that liquorice extract-containing mouthwashes be used to prevent H. pylori infections in the oral cavity in clinical studies.
{"title":"Effect of Liquorice-Extract-Containing Antimicrobial Mouthwash on Helicobacter Pylori: An In Vitro Study","authors":"S. Bohlouli, Mahdiyeh Esmaeilzadeh, H. Samadi kafil, R. Negahdari, B. Shokouhi, Z. Aghazadeh","doi":"10.34172/ajdr.2022.546","DOIUrl":"https://doi.org/10.34172/ajdr.2022.546","url":null,"abstract":"Background: The oral route is one of the main portals for Helicobacter pylori transmission. The elimination of this bacterial species from the oral cavity might be useful in oral health and decreasing infections due to H. pylori. This study aimed to evaluate the effect of a liquorice-extract-containing mouthwash at different concentrations on the proliferation of H. pylori in vitro. Methods: H. pylori bacterial species was cultured, and the isolated strains from the specific culture medium were prepared for the welling procedures. The liquorice (Glycyrrhiza glabra) mouthwash at 12.5% and 25% concentrations was added to the case group wells at 1,1/2,1/4,1/8, and 1/16 dilutions. In the control group, regular daily mouthwash containing cetylpyridinium chloride and sodium fluoride components was used. The growth inhibition zones were analyzed in the study groups. The data were analyzed by SPSS and reported using descriptive statistics (means±standard deviation). Results: In both the mouthwashes containing 25% and 12.5% concentration, the means of growth inhibition zones at 1, 1/2, 1/4, 1/8, and 1/16 dilutions were larger than those in the control group. Further, the largest growth inhibition zone was seen with the undiluted 25% mouthwash. There were no significant differences in the H. pylori growth inhibition zones between 25% and 12.5% mouthwashes (P=0.14). Conclusions: Mouthwashes containing liquorice extracts inhibited the growth of H. pylori more significantly than mouthwash with no liquorice extract. Therefore, it is suggested that liquorice extract-containing mouthwashes be used to prevent H. pylori infections in the oral cavity in clinical studies.","PeriodicalId":8679,"journal":{"name":"Avicenna Journal of Dental Research","volume":"49 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80120309","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: Panoramic imaging is a technique to create images of facial structures. Various factors affect the preparation of a high quality and proper panoramic image, such as the patient’s proper position. The aim of this study was to investigate positional errors in panoramic images based on the dentition type of patients referring to oral and maxillofacial radiology department of Tabriz Dental School Methods: This cross-sectional study was conducted in Radiology Department of Tabriz Dental School in 2017-18. Dentition of patients (primary, mixed, permanent, complete edentulous) was determined by radiography. 410 radiography per group (1640 samples) were selected from the archives of Radiology Department by simple random sampling method. one radiologist evaluated all the images in the same condition and in a semi-dark room, in a 21-inch DELL monitor, regarding the presence of each of the positioning errors. Radiographs that were repeated due to positioning errors and poor diagnostic quality were classified as unacceptable radiographic images. Results: In primary, mixed, permanent and edentulous dentitions, not attaching the tongue to the palate were the most errors in the radiographies, with 50.4%, 65.6%, 64.3% and 64.8%, respectively. The presence of 2 errors (563 radiographies, 34.3%) had the highest frequency. 123 radiographies (7.5%) were free of errors. Primary dentition with 95 radiographies (23.2%) had the highest unacceptable radiographies, and edentulous dentition with 29 radiographies (7.1%) had the lowest unacceptable radiographies. Chi-square test indicated that this finding was statistically significant (P <0.001). Conclusions: Positioning error has high prevalence in radiographic images, the most common of which is not attaching the tongue to the palate during radiography. In the primary dentition period, the number of acceptable radiographs was lower than the other periods.
{"title":"Positioning Errors in Panoramic Images Based on the Dentition Type of Patients Referring to the Oral and Maxillofacial Radiology Department of Tabriz Dental School During 2017-2018","authors":"Hossein Maghbuli, Tahmineh Razi, Elham Banakar, Parya Emamverdizade, Sedigheh Razi","doi":"10.34172/ajdr.2023.535","DOIUrl":"https://doi.org/10.34172/ajdr.2023.535","url":null,"abstract":"Background: Panoramic imaging is a technique to create images of facial structures. Various factors affect the preparation of a high quality and proper panoramic image, such as the patient’s proper position. The aim of this study was to investigate positional errors in panoramic images based on the dentition type of patients referring to oral and maxillofacial radiology department of Tabriz Dental School Methods: This cross-sectional study was conducted in Radiology Department of Tabriz Dental School in 2017-18. Dentition of patients (primary, mixed, permanent, complete edentulous) was determined by radiography. 410 radiography per group (1640 samples) were selected from the archives of Radiology Department by simple random sampling method. one radiologist evaluated all the images in the same condition and in a semi-dark room, in a 21-inch DELL monitor, regarding the presence of each of the positioning errors. Radiographs that were repeated due to positioning errors and poor diagnostic quality were classified as unacceptable radiographic images. Results: In primary, mixed, permanent and edentulous dentitions, not attaching the tongue to the palate were the most errors in the radiographies, with 50.4%, 65.6%, 64.3% and 64.8%, respectively. The presence of 2 errors (563 radiographies, 34.3%) had the highest frequency. 123 radiographies (7.5%) were free of errors. Primary dentition with 95 radiographies (23.2%) had the highest unacceptable radiographies, and edentulous dentition with 29 radiographies (7.1%) had the lowest unacceptable radiographies. Chi-square test indicated that this finding was statistically significant (P <0.001). Conclusions: Positioning error has high prevalence in radiographic images, the most common of which is not attaching the tongue to the palate during radiography. In the primary dentition period, the number of acceptable radiographs was lower than the other periods.","PeriodicalId":8679,"journal":{"name":"Avicenna Journal of Dental Research","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91108694","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}
E. Farhadi, Ladan Ranjbar Omrani, Taraneh Estedlal, E. Ahmadi
A ceramic onlay restoration is a more conservative treatment than full-coverage crowns for endodontically treated teeth (ETT); thus, it helps preserve the tooth structure. Deep margin elevation (DME) is a method to relocate subgingival margins into a more coronal position with resin-modified glass ionomer (RMGI) or direct composite resin before the cementation of the indirect restoration. A 33-year-old male was referred to restore two ETT (teeth N. 46 and 47) with extensive coronal defects extending subgingivally between two teeth. Tooth N. 47 could not undergo a crown lengthening (CL) procedure due to its short root trunk. DME with RMGI was done for both teeth before preparation for ceramic onlays. In this case, by following the principles of biomimetic dentistry, we aimed to restore the tooth defect with a material that bore all functional stresses, in addition to achieving esthetic. It seems that DME in combination with ceramic onlay restoration can be a conservative method to restore ETT in the posterior region. The goal of considering the principles of biomimetic dentistry is to maintain the function of teeth using a good bond to hard tissue that unifies the tooth and its restoration hence distributing the stresses through the tooth as a unit with near-normal functional, biological, and esthetic features.
{"title":"Deep Margin Elevation With Resin-modified Glass Ionomer in Posterior Adhesive Indirect Restorations Based on Biomimetic Principles: A Case Report","authors":"E. Farhadi, Ladan Ranjbar Omrani, Taraneh Estedlal, E. Ahmadi","doi":"10.34172/ajdr.2022.532","DOIUrl":"https://doi.org/10.34172/ajdr.2022.532","url":null,"abstract":"A ceramic onlay restoration is a more conservative treatment than full-coverage crowns for endodontically treated teeth (ETT); thus, it helps preserve the tooth structure. Deep margin elevation (DME) is a method to relocate subgingival margins into a more coronal position with resin-modified glass ionomer (RMGI) or direct composite resin before the cementation of the indirect restoration. A 33-year-old male was referred to restore two ETT (teeth N. 46 and 47) with extensive coronal defects extending subgingivally between two teeth. Tooth N. 47 could not undergo a crown lengthening (CL) procedure due to its short root trunk. DME with RMGI was done for both teeth before preparation for ceramic onlays. In this case, by following the principles of biomimetic dentistry, we aimed to restore the tooth defect with a material that bore all functional stresses, in addition to achieving esthetic. It seems that DME in combination with ceramic onlay restoration can be a conservative method to restore ETT in the posterior region. The goal of considering the principles of biomimetic dentistry is to maintain the function of teeth using a good bond to hard tissue that unifies the tooth and its restoration hence distributing the stresses through the tooth as a unit with near-normal functional, biological, and esthetic features.","PeriodicalId":8679,"journal":{"name":"Avicenna Journal of Dental Research","volume":"99 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90954589","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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