Hiroshi Hikasa, K. Sakata, Takayuki Mizuno, Takumi Kato, Y. Kitagawa, N. Sakakibara
The frequency of epidermoid cysts in the maxillofacial region is relatively low. Reported: a case of a giant sublingual epidermoid cyst on the floor of the mouth. Case: 38-year-old woman. Chief complaint: oral swelling and respiratory distress. History of present illness: no special notes. Current medical history: she was aware of swelling of the floor of the mouth six months before visiting our department and was referred to our department because of increasing size. Present symptoms: at the time of examination, forced respiration and dysarthria were observed and a spherical soft elastic and well-defined mass was observed on the floor of the mouth. Due to the lesion, the tongue was displaced to the pharyngeal side and the tip of the tongue could not be confirmed. Imaging tests revealed a 65 mm × 76 mm × 54 mm well-defined mass on the mylohyoid muscle, and a dermoid or epidermoid cyst was suspected. Based on the clinical diagnosis of the cyst, the bulk of the cyst contents was reduced under general anesthesia, and the cyst was removed by intraoral surgery. The pathological diagnosis was an epidermoid cyst. For sublingual giant epidermoid cysts, removal by content reducing surgery was considered to be effective.
颌面部表皮样囊肿的发生率相对较低。报告:一个巨大的舌下表皮样囊肿在口腔底部的病例。病例:38岁女性。主诉:口腔肿胀，呼吸窘迫。现病史:无特殊记录。既往病史:患者就诊前6个月发现口底肿胀，因体积增大转至我科就诊。目前症状:检查时，观察到强迫呼吸和构音障碍，在口腔底部观察到一球形软弹性和明确的肿块。由于病变，舌向咽侧移位，舌尖无法确定。影像学检查显示在髓舌骨肌上有一个65 mm × 76 mm × 54 mm的清晰肿块，怀疑为皮样或表皮样囊肿。根据囊肿的临床诊断，全麻下缩小囊肿内容物体积，经口内手术切除囊肿。病理诊断为表皮样囊肿。对于舌下巨大表皮样囊肿，通过减容手术切除被认为是有效的。
{"title":"A Case of a Giant Sublingual Epidermoid Cyst Removed by Content Reducing Surgery","authors":"Hiroshi Hikasa, K. Sakata, Takayuki Mizuno, Takumi Kato, Y. Kitagawa, N. Sakakibara","doi":"10.3390/oral2010013","DOIUrl":"https://doi.org/10.3390/oral2010013","url":null,"abstract":"The frequency of epidermoid cysts in the maxillofacial region is relatively low. Reported: a case of a giant sublingual epidermoid cyst on the floor of the mouth. Case: 38-year-old woman. Chief complaint: oral swelling and respiratory distress. History of present illness: no special notes. Current medical history: she was aware of swelling of the floor of the mouth six months before visiting our department and was referred to our department because of increasing size. Present symptoms: at the time of examination, forced respiration and dysarthria were observed and a spherical soft elastic and well-defined mass was observed on the floor of the mouth. Due to the lesion, the tongue was displaced to the pharyngeal side and the tip of the tongue could not be confirmed. Imaging tests revealed a 65 mm × 76 mm × 54 mm well-defined mass on the mylohyoid muscle, and a dermoid or epidermoid cyst was suspected. Based on the clinical diagnosis of the cyst, the bulk of the cyst contents was reduced under general anesthesia, and the cyst was removed by intraoral surgery. The pathological diagnosis was an epidermoid cyst. For sublingual giant epidermoid cysts, removal by content reducing surgery was considered to be effective.","PeriodicalId":19616,"journal":{"name":"Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87440902","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}
Alessandra Paras, Sunyoung Ma, J. N. Waddell, J. Choi
Aims. The purpose of this systematic review was to evaluate studies that assessed denture–mucosa pressure distribution and pressure–pain threshold and their methodology, used to measure such pressure distributions, mainly in complete and implant overdentures. Materials and methods. An electronic search of the relevant full-text peer-reviewed literature on denture–mucosa pressure distribution was done. Searches were performed independently by two researchers by using the OVID Medline, PubMed and Web of Science databases from 1 January 1946 to 31 December 2021 using the following MeSH terms; (denture OR complete dentures OR implant supported dentures) AND (mucosa OR mucous membrane) AND (pressure OR hydrostatic pressure). Only those publications in the English language were included. Furthermore, a manual search of the citations of the included studies was done to ensure a thorough search was conducted. Results. A full text review resulted in a total of eighteen studies. Of these, seven evaluated various intraoral pressures, two investigated the pressure–pain threshold in edentulous oral mucosa, five measured intraoral pressure through finite element analysis/FEA studies, two demonstrated pressure transducer and pressure measuring systems, and two investigated the comparison between implant-overdentures and complete dentures. Conclusions. To date, there is no study that assesses the pressure distribution on oral mucosa to provide a standardised and validated baseline pressure range which can be used to improve the designs and materials used for fabricating complete dentures. The relationship between pressure on the oral mucosa and the pain threshold of denture-wearing patients still remains poorly understood. There is yet no baseline data which can be universally applied for future studies; to correlate the oral mucosa pressure and pain threshold of edentulous patients encourages further research, especially comparing mucosa pressure under different denture designs for both complete and implant overdentures.
目标本系统综述的目的是评价评估义齿-粘膜压力分布和压力-疼痛阈值的研究及其测量这些压力分布的方法，主要用于全口和种植覆盖义齿。材料和方法。电子检索了义齿-粘膜压力分布的相关全文同行评议文献。1946年1月1日至2021年12月31日，两名研究人员使用OVID Medline、PubMed和Web of Science数据库独立进行搜索，使用以下MeSH术语:(义齿或全口义齿或种植义齿)和(粘膜或粘膜)和(压力或静水压力)。只包括英文出版物。此外，对纳入研究的引文进行了人工检索，以确保进行了彻底的检索。结果。一份全文综述总共有18项研究。其中，7项研究评估了各种口腔内压力，2项研究了无牙口腔黏膜的压力-疼痛阈值，5项通过有限元分析/FEA研究测量了口腔内压力，2项展示了压力传感器和压力测量系统，2项研究了种植覆盖义齿和全口义齿的比较。结论。到目前为止，还没有研究评估口腔黏膜上的压力分布，以提供一个标准化和有效的基线压力范围，用于改进用于制造全口义齿的设计和材料。口腔黏膜压力与假牙患者疼痛阈值之间的关系尚不清楚。目前还没有可以普遍应用于未来研究的基线数据;无牙患者口腔黏膜压力与疼痛阈值的相关性值得进一步研究，特别是比较全口和种植覆盖义齿不同设计下的黏膜压力。
{"title":"Denture–Mucosa Pressure Distribution and Pressure–Pain Threshold in In Vivo, In Vitro and In Silico Studies: A Literature Review","authors":"Alessandra Paras, Sunyoung Ma, J. N. Waddell, J. Choi","doi":"10.3390/oral2010012","DOIUrl":"https://doi.org/10.3390/oral2010012","url":null,"abstract":"Aims. The purpose of this systematic review was to evaluate studies that assessed denture–mucosa pressure distribution and pressure–pain threshold and their methodology, used to measure such pressure distributions, mainly in complete and implant overdentures. Materials and methods. An electronic search of the relevant full-text peer-reviewed literature on denture–mucosa pressure distribution was done. Searches were performed independently by two researchers by using the OVID Medline, PubMed and Web of Science databases from 1 January 1946 to 31 December 2021 using the following MeSH terms; (denture OR complete dentures OR implant supported dentures) AND (mucosa OR mucous membrane) AND (pressure OR hydrostatic pressure). Only those publications in the English language were included. Furthermore, a manual search of the citations of the included studies was done to ensure a thorough search was conducted. Results. A full text review resulted in a total of eighteen studies. Of these, seven evaluated various intraoral pressures, two investigated the pressure–pain threshold in edentulous oral mucosa, five measured intraoral pressure through finite element analysis/FEA studies, two demonstrated pressure transducer and pressure measuring systems, and two investigated the comparison between implant-overdentures and complete dentures. Conclusions. To date, there is no study that assesses the pressure distribution on oral mucosa to provide a standardised and validated baseline pressure range which can be used to improve the designs and materials used for fabricating complete dentures. The relationship between pressure on the oral mucosa and the pain threshold of denture-wearing patients still remains poorly understood. There is yet no baseline data which can be universally applied for future studies; to correlate the oral mucosa pressure and pain threshold of edentulous patients encourages further research, especially comparing mucosa pressure under different denture designs for both complete and implant overdentures.","PeriodicalId":19616,"journal":{"name":"Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics","volume":"157 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86337277","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}
V. Mudliar, Mei Ting Tieh, J. Aarts, Alessandra Paras, J. Choi
The purpose of this systematic review was to identify the different methods used to measure artificial teeth wear and to determine which denture teeth (or which combination of tooth types) have better wear resistance. The focused patient, intervention, comparison, and outcome (PICO) question for this review was “which available denture teeth or combination of teeth have higher wear resistance?” The method of testing and measuring the artificial teeth wear was also evaluated as a secondary outcome. We searched OVID Medline, PubMed and SCOPUS using the following terms (MeSH words) with any synonyms and closed terms: “wear”, “denture teeth”, “denture tooth”, or “artificial tooth”, “tooth wear”, or combination of “denture tooth wear”. Database searches were limited to the English language and studies published between years 1997 and 2021. Further hand searches were carried out of studies identified from the bibliographies of relevant articles. The electronic data base search identified 293 articles of which 213 were eliminated after removing duplicates and screening the titles of the articles. A further 31 articles were eliminated upon application of the exclusion criterion and full text reading because they were either not in the English language or were review articles. Only 41 articles met the inclusion criterion; along with addition of one hand search article, a total of 42 articles were included in the review. The studies showed that rate of denture teeth wear is influenced by factors such as the material and composition of the artificial teeth, the denture tooth antagonist, the tooth being replaced, patient’s age and sex, the type of removable prosthesis and the amount of the superficial layer removed during occlusal adjustments. The testing parameters were inconsistent across all studies. In conclusion, artificial teeth of same material should be used as antagonists where possible, and the superficial outer layer of the teeth must be preserved as much as possible during occlusal adjustments to enhance wear resistance. Denture teeth should be selected taking into consideration the tooth being replaced, the age and sex of the patient, and the type of prosthesis. Incorporation of nano fillers into acrylic resin teeth does not increase wear resistance; therefore, there is no evidence to favour the use of nano-filled composite teeth over micro-filled or conventional acrylic resin teeth.
{"title":"Wear of Modern Denture Teeth—A Systematic Review","authors":"V. Mudliar, Mei Ting Tieh, J. Aarts, Alessandra Paras, J. Choi","doi":"10.3390/oral2010011","DOIUrl":"https://doi.org/10.3390/oral2010011","url":null,"abstract":"The purpose of this systematic review was to identify the different methods used to measure artificial teeth wear and to determine which denture teeth (or which combination of tooth types) have better wear resistance. The focused patient, intervention, comparison, and outcome (PICO) question for this review was “which available denture teeth or combination of teeth have higher wear resistance?” The method of testing and measuring the artificial teeth wear was also evaluated as a secondary outcome. We searched OVID Medline, PubMed and SCOPUS using the following terms (MeSH words) with any synonyms and closed terms: “wear”, “denture teeth”, “denture tooth”, or “artificial tooth”, “tooth wear”, or combination of “denture tooth wear”. Database searches were limited to the English language and studies published between years 1997 and 2021. Further hand searches were carried out of studies identified from the bibliographies of relevant articles. The electronic data base search identified 293 articles of which 213 were eliminated after removing duplicates and screening the titles of the articles. A further 31 articles were eliminated upon application of the exclusion criterion and full text reading because they were either not in the English language or were review articles. Only 41 articles met the inclusion criterion; along with addition of one hand search article, a total of 42 articles were included in the review. The studies showed that rate of denture teeth wear is influenced by factors such as the material and composition of the artificial teeth, the denture tooth antagonist, the tooth being replaced, patient’s age and sex, the type of removable prosthesis and the amount of the superficial layer removed during occlusal adjustments. The testing parameters were inconsistent across all studies. In conclusion, artificial teeth of same material should be used as antagonists where possible, and the superficial outer layer of the teeth must be preserved as much as possible during occlusal adjustments to enhance wear resistance. Denture teeth should be selected taking into consideration the tooth being replaced, the age and sex of the patient, and the type of prosthesis. Incorporation of nano fillers into acrylic resin teeth does not increase wear resistance; therefore, there is no evidence to favour the use of nano-filled composite teeth over micro-filled or conventional acrylic resin teeth.","PeriodicalId":19616,"journal":{"name":"Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74058489","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}
The aim of this study is to capture the dental anxiety of patients in a dental clinic. A special focus was placed on the measurement of the course of possible anxiety occurring during a single dental visit with different surgical procedures. Therefore, 129 patients were interviewed in an oral surgical clinic. The course of possible anxiety was measured with a short questionnaire about the current stress (“Kurzfragebogen zur aktuellen Beanspruchung”, KAB), which was completed by the patients at three different times in the waiting room, as well as before and after the treatment in the consulting room. In the waiting room, the patient answered a questionnaire, including the following instruments: questions about age and sex, KAB (stress), and the Dental Anxiety Scale (DAS, anxiety). According to the DAS, 64.1% belonged to the low-anxiety group, 29.7% belonged to the medium-anxiety group and 6.2% belonged to the high-anxiety group. For all groups, the stress just before the treatment was the highest and it was the lowest after treatment. The KAB values of the female patients were significantly higher than those of the male patients. About one third of the patients suffered from dental anxiety.
本研究的目的是捕捉牙科诊所患者的牙科焦虑。一个特别的重点放在测量过程中可能出现的焦虑在一次牙科访问与不同的外科手术程序。因此，我们在某口腔外科诊所对129例患者进行了访谈。可能的焦虑过程通过一份关于当前压力的简短问卷(“Kurzfragebogen zur aktuellen Beanspruchung”，KAB)来测量，该问卷由患者在候诊室的三个不同时间完成，以及在咨询室治疗前和治疗后。在候诊室，患者回答了一份问卷，包括以下工具:年龄和性别问题，KAB(压力)和牙科焦虑量表(DAS，焦虑)。根据DAS, 64.1%属于低焦虑组，29.7%属于中等焦虑组，6.2%属于高焦虑组。各组治疗前应激最高，治疗后应激最低。女性患者KAB值明显高于男性患者。大约三分之一的患者患有牙科焦虑症。
{"title":"Dental Anxiety and Stress in Patients during Different Types of Oral Surgery","authors":"P. Richter, Christin Bohl, H. Berth","doi":"10.3390/oral2010010","DOIUrl":"https://doi.org/10.3390/oral2010010","url":null,"abstract":"The aim of this study is to capture the dental anxiety of patients in a dental clinic. A special focus was placed on the measurement of the course of possible anxiety occurring during a single dental visit with different surgical procedures. Therefore, 129 patients were interviewed in an oral surgical clinic. The course of possible anxiety was measured with a short questionnaire about the current stress (“Kurzfragebogen zur aktuellen Beanspruchung”, KAB), which was completed by the patients at three different times in the waiting room, as well as before and after the treatment in the consulting room. In the waiting room, the patient answered a questionnaire, including the following instruments: questions about age and sex, KAB (stress), and the Dental Anxiety Scale (DAS, anxiety). According to the DAS, 64.1% belonged to the low-anxiety group, 29.7% belonged to the medium-anxiety group and 6.2% belonged to the high-anxiety group. For all groups, the stress just before the treatment was the highest and it was the lowest after treatment. The KAB values of the female patients were significantly higher than those of the male patients. About one third of the patients suffered from dental anxiety.","PeriodicalId":19616,"journal":{"name":"Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics","volume":"49 3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77323677","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}
Mei Ting Pong, Anastasiia Grymak, J. N. Waddell, J. Choi
Aim: To measure the bond strength between two different CAD/CAM PMMA denture base resins and three different types of gum characterisation composites. Materials and Methods: CAD/CAM single cross-linked (Telio CAD) and double cross-linked (Vivodent CAD) resins were prepared, obtaining a total of 180 bar specimens. Each specimen was prepared according to the manufacturer’s instructions. The specimens were bonded to three different characterisation composites with varying viscosities; Kulzer Pala-creactive (P), Ivoclar SR Nexco (S), Shofu Ceramage (F). All the specimens were then tested using a chevron-notched three-point bond strength test in a universal testing machine to obtain fracture energy release toughness (MPa√m) and bond strength (MPa). The specimens were thermocycled to simulate 6 and 12 months of ageing in vivo. The results were statistically analysed (SPSS). The fractured surfaces of the tested specimens were examined with a scanning electron microscope (SEM) to evaluate the failure modes. Results: Pala-creactive characterisation composites showed the highest overall bond strength (3.49 ± 0.86 MPa) and fracture toughness (1.59 ± 0.34 MPa√m) when bonded to both CAD PMMA denture resins, which were statistically higher than the values obtained when they were bonded to Telio (p < 0.001). The Ceramage composite showed the lowest bond strength (1.05 ± 0.59 MPa) and fracture toughness (0.47 ± 0.4 MPa√m). The dominant mode of failure for all groups was mixed. Conclusion: Single cross-linked PMMA (Telio) showed a higher overall bond strength compared to double cross-linked PMMA when bonded to three different characterisation composites. Telio CAD showed a clear bond strength decrease after 6 and 12 months of artificial ageing, while Vivodent CAD showed a bond strength increase.
{"title":"Bond Strength between CAD/CAM PMMA Denture Base Resins and Characterisation Composites","authors":"Mei Ting Pong, Anastasiia Grymak, J. N. Waddell, J. Choi","doi":"10.3390/oral2010009","DOIUrl":"https://doi.org/10.3390/oral2010009","url":null,"abstract":"Aim: To measure the bond strength between two different CAD/CAM PMMA denture base resins and three different types of gum characterisation composites. Materials and Methods: CAD/CAM single cross-linked (Telio CAD) and double cross-linked (Vivodent CAD) resins were prepared, obtaining a total of 180 bar specimens. Each specimen was prepared according to the manufacturer’s instructions. The specimens were bonded to three different characterisation composites with varying viscosities; Kulzer Pala-creactive (P), Ivoclar SR Nexco (S), Shofu Ceramage (F). All the specimens were then tested using a chevron-notched three-point bond strength test in a universal testing machine to obtain fracture energy release toughness (MPa√m) and bond strength (MPa). The specimens were thermocycled to simulate 6 and 12 months of ageing in vivo. The results were statistically analysed (SPSS). The fractured surfaces of the tested specimens were examined with a scanning electron microscope (SEM) to evaluate the failure modes. Results: Pala-creactive characterisation composites showed the highest overall bond strength (3.49 ± 0.86 MPa) and fracture toughness (1.59 ± 0.34 MPa√m) when bonded to both CAD PMMA denture resins, which were statistically higher than the values obtained when they were bonded to Telio (p < 0.001). The Ceramage composite showed the lowest bond strength (1.05 ± 0.59 MPa) and fracture toughness (0.47 ± 0.4 MPa√m). The dominant mode of failure for all groups was mixed. Conclusion: Single cross-linked PMMA (Telio) showed a higher overall bond strength compared to double cross-linked PMMA when bonded to three different characterisation composites. Telio CAD showed a clear bond strength decrease after 6 and 12 months of artificial ageing, while Vivodent CAD showed a bond strength increase.","PeriodicalId":19616,"journal":{"name":"Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82113345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Objectives: To measure and compare the bond strength between three different types of ceramics and resin cement, as well as the degree of conversion of resin cement after using different light-curing units and curing modes. Methods: Three types of ceramics—Leucite-reinforced (Empress CAD), Lithium disilicate (Emax CAD), and Zirconia (Emax ZirCAD)—of varying thicknesses (1.5 mm and 2.0 mm) were bonded to a light-cure resin cement (Variolink Esthetic LC). Light-curing was carried out using a monowave LCU (3M Elipar DeepCure-S LED Curing Light with irradiance of 1470 mW/cm2) and with polywave LCU (Ivoclar Bluephase PowerCure) using High, Turbo, and 3 s curing modes, respectively (1200, 2100, 3000 mW/cm2). A chevron-notch bond strength test (total n = 288) was conducted to calculate the fracture energy and interfacial bond strength (J/m2). The degree of cure (%DC) of the residual resin cement on debonded surfaces was measured using Fourier Transform Infrared Spectroscopy (FTIR). Collected data were statistically analysed under SPSS ver. 27 by conducting an ANOVA and Bonferroni post hoc test. The mode of failure was established using a scanning electron microscope (SEM). Results: A significant difference in interfacial bond strength was found between the three types of ceramic material groups (p < 0.01). Cement cured through Empress that was 2 mm thick showed the highest bond strength (1.36 ± 0.46 J/m2), while the lowest was observed (0.26 ± 0.07 J/m2) in 2 mm Emax CAD using the 3 s mode. The use of different LCUs and curing modes had a significant influence on the %DC of resin cement seen in all groups, except 2 mm Emax ZirCAD. The dominant mode of failure for Empress, EmaxCAD, and EmaxZirCAD were cohesive, adhesive, and mixed, respectively. Conclusions: The type of ceramic and its thickness can significantly affect bond strength, and the results showed that polywave LCU is more effective than monowave LCU when curing through ceramics.
{"title":"Curing through Ceramics: Influence of Different Light-Curing Units and Curing Modes on Bond Strength","authors":"Evonne Mei Jing Phua, J. N. Waddell, J. Choi","doi":"10.3390/oral2010008","DOIUrl":"https://doi.org/10.3390/oral2010008","url":null,"abstract":"Objectives: To measure and compare the bond strength between three different types of ceramics and resin cement, as well as the degree of conversion of resin cement after using different light-curing units and curing modes. Methods: Three types of ceramics—Leucite-reinforced (Empress CAD), Lithium disilicate (Emax CAD), and Zirconia (Emax ZirCAD)—of varying thicknesses (1.5 mm and 2.0 mm) were bonded to a light-cure resin cement (Variolink Esthetic LC). Light-curing was carried out using a monowave LCU (3M Elipar DeepCure-S LED Curing Light with irradiance of 1470 mW/cm2) and with polywave LCU (Ivoclar Bluephase PowerCure) using High, Turbo, and 3 s curing modes, respectively (1200, 2100, 3000 mW/cm2). A chevron-notch bond strength test (total n = 288) was conducted to calculate the fracture energy and interfacial bond strength (J/m2). The degree of cure (%DC) of the residual resin cement on debonded surfaces was measured using Fourier Transform Infrared Spectroscopy (FTIR). Collected data were statistically analysed under SPSS ver. 27 by conducting an ANOVA and Bonferroni post hoc test. The mode of failure was established using a scanning electron microscope (SEM). Results: A significant difference in interfacial bond strength was found between the three types of ceramic material groups (p < 0.01). Cement cured through Empress that was 2 mm thick showed the highest bond strength (1.36 ± 0.46 J/m2), while the lowest was observed (0.26 ± 0.07 J/m2) in 2 mm Emax CAD using the 3 s mode. The use of different LCUs and curing modes had a significant influence on the %DC of resin cement seen in all groups, except 2 mm Emax ZirCAD. The dominant mode of failure for Empress, EmaxCAD, and EmaxZirCAD were cohesive, adhesive, and mixed, respectively. Conclusions: The type of ceramic and its thickness can significantly affect bond strength, and the results showed that polywave LCU is more effective than monowave LCU when curing through ceramics.","PeriodicalId":19616,"journal":{"name":"Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics","volume":"77 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83869312","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}
Chika Murai, K. Sakata, Chisato Ouchi, Masanao Sonobe, K. Yoshikawa, J. Sato, Akira Satoh, A. Matsuda, Y. Kitagawa
Background: Carcinoma cuniculatum (CC) is a rare subtype of squamous cell carcinoma that is difficult to diagnose owing to the lack of cellar atypia and/or associated oral epithelial dysplasia. The prognosis is good given proper resection, but it often has a poor prognosis with recurrence. We present the case of a 78-year-old man who visited our department with an ulcer around the implant in tooth 35. With Nikolsky’s phenomenon in the gingiva, a detailed examination revealed pemphigus vulgaris. Steroid administration remarkably improved the oral symptoms but caused osteomyelitis and rapid bone destruction, leading to pathological fracture. After multiple biopsies, mandibular segment resection was performed with a diagnosis of mandibular osteomyelitis, and no malignant findings were found. Four months later, the wound reopened, a white keratinized lesion appeared, and a biopsy revealed CC. Unresectable tumor infiltration was already observed, but the patient died of aspiration pneumonia 15 months after diagnosis. Conclusions: It took 20 months to make a definitive diagnosis of CC in this case. Pemphigus vulgaris may have made the diagnosis particularly difficult. Since other CCs are often diagnosed with osteomyelitis or odontogenic keratocyst preoperatively, we recommend keeping in mind the possibility of CC in refractory cases.
{"title":"Mandibular Carcinoma Cuniculatum around the Dental Implant in a Patient with Concurrent Management for Pemphigus Vulgaris: A Case Report","authors":"Chika Murai, K. Sakata, Chisato Ouchi, Masanao Sonobe, K. Yoshikawa, J. Sato, Akira Satoh, A. Matsuda, Y. Kitagawa","doi":"10.3390/oral2010007","DOIUrl":"https://doi.org/10.3390/oral2010007","url":null,"abstract":"Background: Carcinoma cuniculatum (CC) is a rare subtype of squamous cell carcinoma that is difficult to diagnose owing to the lack of cellar atypia and/or associated oral epithelial dysplasia. The prognosis is good given proper resection, but it often has a poor prognosis with recurrence. We present the case of a 78-year-old man who visited our department with an ulcer around the implant in tooth 35. With Nikolsky’s phenomenon in the gingiva, a detailed examination revealed pemphigus vulgaris. Steroid administration remarkably improved the oral symptoms but caused osteomyelitis and rapid bone destruction, leading to pathological fracture. After multiple biopsies, mandibular segment resection was performed with a diagnosis of mandibular osteomyelitis, and no malignant findings were found. Four months later, the wound reopened, a white keratinized lesion appeared, and a biopsy revealed CC. Unresectable tumor infiltration was already observed, but the patient died of aspiration pneumonia 15 months after diagnosis. Conclusions: It took 20 months to make a definitive diagnosis of CC in this case. Pemphigus vulgaris may have made the diagnosis particularly difficult. Since other CCs are often diagnosed with osteomyelitis or odontogenic keratocyst preoperatively, we recommend keeping in mind the possibility of CC in refractory cases.","PeriodicalId":19616,"journal":{"name":"Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73422598","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. Bettini, G. Saia, Federica Benetello, A. Bedogni
Denosumab has proved effective at low doses in increasing bone mineral density in osteoporosis patients. In contrast to high-doses antiresorptive therapy, denosumab has a transient effect on the inhibition of the bone remodeling process, suggesting that denosumab-related osteonecrosis is a self-limiting disease, with a high curative potential of surgery when performed after a proper duration of receptor activator of nuclear factor-kB ligand (RANKL) inhibitor suspension. We report the long-term clinical and radiological (Computed Tomography—CT scan) data of a patient affected by secondary osteoporosis (cancer treatment-induced bone loss—CTIBL for metastatic breast cancer) who underwent surgical treatment for stage II denosumab-related osteonecrosis of the upper maxilla 7 months after denosumab suspension. A minimally invasive approach was performed with the extraction of the first right upper molar and debridement of the surrounding alveolar bone. After surgery, the patient was followed up at three-month intervals up to 1 year, and clinical and radiological data (CT scan) were recorded at each follow-up for the early detection of signs of recurrent disease. The mucosal healing remained stable in the long term, with radiological signs of bone remodeling in the post-operative site since the 6-month follow-up. The presented case strengthens the hypothesis that denosumab induces temporary alterations of bone turnover with a predictable curative effect of minimal surgical procedures in cases of denosumab-related osteonecrosis of the jaw.
{"title":"Temporary Denosumab Discontinuation Promotes Bone Healing of Osteonecrosis of the Jaw and Minimizes the Invasiveness of Surgery: A Case Presentation","authors":"G. Bettini, G. Saia, Federica Benetello, A. Bedogni","doi":"10.3390/oral2010006","DOIUrl":"https://doi.org/10.3390/oral2010006","url":null,"abstract":"Denosumab has proved effective at low doses in increasing bone mineral density in osteoporosis patients. In contrast to high-doses antiresorptive therapy, denosumab has a transient effect on the inhibition of the bone remodeling process, suggesting that denosumab-related osteonecrosis is a self-limiting disease, with a high curative potential of surgery when performed after a proper duration of receptor activator of nuclear factor-kB ligand (RANKL) inhibitor suspension. We report the long-term clinical and radiological (Computed Tomography—CT scan) data of a patient affected by secondary osteoporosis (cancer treatment-induced bone loss—CTIBL for metastatic breast cancer) who underwent surgical treatment for stage II denosumab-related osteonecrosis of the upper maxilla 7 months after denosumab suspension. A minimally invasive approach was performed with the extraction of the first right upper molar and debridement of the surrounding alveolar bone. After surgery, the patient was followed up at three-month intervals up to 1 year, and clinical and radiological data (CT scan) were recorded at each follow-up for the early detection of signs of recurrent disease. The mucosal healing remained stable in the long term, with radiological signs of bone remodeling in the post-operative site since the 6-month follow-up. The presented case strengthens the hypothesis that denosumab induces temporary alterations of bone turnover with a predictable curative effect of minimal surgical procedures in cases of denosumab-related osteonecrosis of the jaw.","PeriodicalId":19616,"journal":{"name":"Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics","volume":"109 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79593976","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}
The aim of this in vitro study was to investigate three different cements for their suitability to provide semi-permanent cementation, and to compare the retention forces of implant-supported single crowns (SC) and three-unit fixed dental prostheses (FDP) luted with these cements. Twenty-four methacrylate models were supplied with three implants/abutments each to simulate the condition of SCs/FDPs. Cobalt-chromium frameworks were fabricated, sandblasted (Al2O3/50 µm/0.2 MPa) then cemented with glass-ionomer (KTC), polycarboxylate (DUR) or self-adhesive resin cement (RXU). Specimens were stored in a saline-solution (NaCl/37 °C/24 h) or subjected to thermocycling. A universal testing machine and a pull-off device were used to remove the copings. The multi-factor ANOVA showed that the retention force differed significantly among all cements for the SCs after NaCl storage (p < 0.05). Mean retention forces (in Newtons) after NaCl storage were (SCs/FDPs): KTC 170/352, DUR 409/406, RXU 265/426, and after thermocycling (SCs/FDPs): KTC 156/262, DUR 306/380, RXU 494/508. FDPs showed higher retention values in comparison to SCs. For SCs, artificial aging with thermocycling resulted in a significant retention increase for RXU, whereas the retention of KTC and DUR was decreased. Glass ionomer can be used as a semi-permanent cement for both SCs and FDPs. Polycarboxylate cement is considered semi-permanent after one year of aging.
{"title":"Retention Forces of Implant-Supported Single Crowns and Fixed Dental Prostheses after Cementation: An In-Vitro Study","authors":"Shaza Bishti, Jousef Siouri, S. Wolfart, T. Tuna","doi":"10.3390/oral2010005","DOIUrl":"https://doi.org/10.3390/oral2010005","url":null,"abstract":"The aim of this in vitro study was to investigate three different cements for their suitability to provide semi-permanent cementation, and to compare the retention forces of implant-supported single crowns (SC) and three-unit fixed dental prostheses (FDP) luted with these cements. Twenty-four methacrylate models were supplied with three implants/abutments each to simulate the condition of SCs/FDPs. Cobalt-chromium frameworks were fabricated, sandblasted (Al2O3/50 µm/0.2 MPa) then cemented with glass-ionomer (KTC), polycarboxylate (DUR) or self-adhesive resin cement (RXU). Specimens were stored in a saline-solution (NaCl/37 °C/24 h) or subjected to thermocycling. A universal testing machine and a pull-off device were used to remove the copings. The multi-factor ANOVA showed that the retention force differed significantly among all cements for the SCs after NaCl storage (p < 0.05). Mean retention forces (in Newtons) after NaCl storage were (SCs/FDPs): KTC 170/352, DUR 409/406, RXU 265/426, and after thermocycling (SCs/FDPs): KTC 156/262, DUR 306/380, RXU 494/508. FDPs showed higher retention values in comparison to SCs. For SCs, artificial aging with thermocycling resulted in a significant retention increase for RXU, whereas the retention of KTC and DUR was decreased. Glass ionomer can be used as a semi-permanent cement for both SCs and FDPs. Polycarboxylate cement is considered semi-permanent after one year of aging.","PeriodicalId":19616,"journal":{"name":"Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics","volume":"10 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74253476","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}
Daniele Pergolini, A. Del Vecchio, G. Palaia, F. Rocchetti, Raffaele Cefalà, R. De Angelis, G. Tenore, U. Romeo
The surgical extraction of the lower third molar is widely practiced in oral surgery. Inflammatory complications such as pain, swelling, and trismus can cause discomfort to the patients after third molar extraction. Several methods have been used to reduce these postoperative sequelae, including the use of corticosteroids, nonsteroidal anti-inflammatory drugs, analgesics, antibiotics, less traumatic surgical methods, and the use of photobiomodulation. This narrative review summarizes the current evidence on the effect of photobiomodulation on pain, facial swelling and trismus after third molar surgery. A literature search using MEDLINE (NCBI PubMed and PMC), EMBASE, Scopus, Cochrane library, Web of Science, and Google Scholar was undertaken up to October 2021. Forty-one articles met the inclusion criteria. Photobiomodulation can be considered an alternative and useful method for controlling pain following impacted wisdom tooth surgery. The effectiveness of PBM in reducing swelling and trismus is still controversial. This review highlights the lack of consensus in the literature on protocols used in PBM therapy.
下第三磨牙的手术拔除在口腔外科中应用广泛。第三磨牙拔除后，炎症并发症如疼痛、肿胀、咬合等可引起患者不适。已有几种方法用于减少这些术后后遗症，包括使用皮质类固醇、非甾体抗炎药、镇痛药、抗生素、创伤较小的手术方法以及使用光生物调节。本文综述了目前关于光生物调节对第三磨牙手术后疼痛、面部肿胀和牙关的影响的证据。文献检索使用MEDLINE (NCBI PubMed和PMC)、EMBASE、Scopus、Cochrane图书馆、Web of Science和Google Scholar，检索时间截止到2021年10月。41篇文章符合纳入标准。光生物调节可以被认为是控制阻生智齿手术后疼痛的一种有效的替代方法。PBM在减轻肿胀和咬牙的有效性仍有争议。这篇综述强调了在PBM治疗中使用的方案缺乏共识的文献。
{"title":"Photobiomodulation after Surgical Extraction of the Lower Third Molars: A Narrative Review","authors":"Daniele Pergolini, A. Del Vecchio, G. Palaia, F. Rocchetti, Raffaele Cefalà, R. De Angelis, G. Tenore, U. Romeo","doi":"10.3390/oral2010004","DOIUrl":"https://doi.org/10.3390/oral2010004","url":null,"abstract":"The surgical extraction of the lower third molar is widely practiced in oral surgery. Inflammatory complications such as pain, swelling, and trismus can cause discomfort to the patients after third molar extraction. Several methods have been used to reduce these postoperative sequelae, including the use of corticosteroids, nonsteroidal anti-inflammatory drugs, analgesics, antibiotics, less traumatic surgical methods, and the use of photobiomodulation. This narrative review summarizes the current evidence on the effect of photobiomodulation on pain, facial swelling and trismus after third molar surgery. A literature search using MEDLINE (NCBI PubMed and PMC), EMBASE, Scopus, Cochrane library, Web of Science, and Google Scholar was undertaken up to October 2021. Forty-one articles met the inclusion criteria. Photobiomodulation can be considered an alternative and useful method for controlling pain following impacted wisdom tooth surgery. The effectiveness of PBM in reducing swelling and trismus is still controversial. This review highlights the lack of consensus in the literature on protocols used in PBM therapy.","PeriodicalId":19616,"journal":{"name":"Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics","volume":"85 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74689989","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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