Pub Date : 2023-11-25DOI: 10.17352/2455-4634.000061
Meena Rahul Kumar, Verma Manvendra
The impact of wind on tall buildings is not uniform and varies according to the building’s shape and size. Designing a tall building with a regular plan shape is relatively straightforward due to the abundance of available data. Codal provisions for tall buildings are mostly accessible when the building’s plan geometry remains unchanged. Data availability is limited to regular shapes, where modifications are not incorporated in tall buildings. Therefore, it is essential to investigate wind effects on buildings with non-regular shapes. Two widely used methods for such investigations are wind tunnel testing and Computational Fluid Dynamics (CFD). While wind tunnel testing is time-consuming, CFD methods can be adopted for preliminary wind tests. It is crucial to validate CFD results before interpreting them for any analysis. Wind predominantly exerts positive forces on the windward corner, while negative forces are observed on the leeward and side faces of high-rise building models.
{"title":"A brief overview of wind tunnel test and CFD to investigate the wind effects on tall building","authors":"Meena Rahul Kumar, Verma Manvendra","doi":"10.17352/2455-4634.000061","DOIUrl":"https://doi.org/10.17352/2455-4634.000061","url":null,"abstract":"The impact of wind on tall buildings is not uniform and varies according to the building’s shape and size. Designing a tall building with a regular plan shape is relatively straightforward due to the abundance of available data. Codal provisions for tall buildings are mostly accessible when the building’s plan geometry remains unchanged. Data availability is limited to regular shapes, where modifications are not incorporated in tall buildings. Therefore, it is essential to investigate wind effects on buildings with non-regular shapes. Two widely used methods for such investigations are wind tunnel testing and Computational Fluid Dynamics (CFD). While wind tunnel testing is time-consuming, CFD methods can be adopted for preliminary wind tests. It is crucial to validate CFD results before interpreting them for any analysis. Wind predominantly exerts positive forces on the windward corner, while negative forces are observed on the leeward and side faces of high-rise building models.","PeriodicalId":144574,"journal":{"name":"International Journal of Oral and Craniofacial Science","volume":"42 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139238000","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 : 2023-04-04DOI: 10.17352/2455-4634.000059
Qureshi Nafeesa, I. Zahid
The importance of occlusion to practicing dentists is immense as it plays a key role in the success or failure of restorative procedures. This article attempts to demystify and present an overview of the complex topic of occlusion and its principles which are important for the success of restorative procedures. The article discusses the principles of occlusion as these apply to restorative dentistry. It provides a guide as to what is required to optimize the occlusion for restorative treatment outcomes, including conformative and reorganized approaches. Occlusion and its effect on the temporomandibular joint are also presented. The topic is clinically relevant as it will help the practitioners to understand the key concepts of occlusion and help improve the outcome of their restorative dental procedures.
{"title":"Principles and concepts of occlusion in restorative dentistry","authors":"Qureshi Nafeesa, I. Zahid","doi":"10.17352/2455-4634.000059","DOIUrl":"https://doi.org/10.17352/2455-4634.000059","url":null,"abstract":"The importance of occlusion to practicing dentists is immense as it plays a key role in the success or failure of restorative procedures. This article attempts to demystify and present an overview of the complex topic of occlusion and its principles which are important for the success of restorative procedures. The article discusses the principles of occlusion as these apply to restorative dentistry. It provides a guide as to what is required to optimize the occlusion for restorative treatment outcomes, including conformative and reorganized approaches. Occlusion and its effect on the temporomandibular joint are also presented. The topic is clinically relevant as it will help the practitioners to understand the key concepts of occlusion and help improve the outcome of their restorative dental procedures.","PeriodicalId":144574,"journal":{"name":"International Journal of Oral and Craniofacial Science","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115576522","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 : 2022-10-27DOI: 10.17352/2455-4634.000058
O. Obimakinde, OA Olajuyin, A. Akinbade, K. Ojo, CO Ibidun, OT Ogunsakin
Aim: The Zygomatic complex [ZMC], being one of the most commonly fractured bones in the facial skeleton, is largely underreported in the literature. This study was designed to evaluate the pattern of fractures, symptomatology, and treatment modalities at our institution. Materials and methods: Information on patients’ sociodemographics, the pattern of fractures, symptomatology, radiologic diagnosis, and treatment modalities were accessed from patients’ records on our trauma register. Data collected was analyzed with SPSS 20 and the level of significance was set at p < 0.05. Results: A total of 105 patients aged 19-66 years had ZMC fractures during the study period. A male preponderance was observed [M: F = 3.8:1] and road traffic crashes [RTC] accounted for the majority of fractures [79.0%]. There was a statistically significant relationship between RTC and fractures among the age groups [X2 = 33.61, df = 5, p = 0.001]. Fractures at the zygomatico-frontal [ZF] and in combination with zygomaticomaxillary [ZM] sutures were the commonest finding on imaging [39.1% % 28.6% respectively]. Subconjunctival and circumorbital ecchymosis [92.4% and 91.4% respectively] were the commonest symptomatology. Eighty four patients (80 %) were managed via surgical intervention and the most commonly employed surgical modality was mini plates [1.0mm] fixation across either ZF [n = 33, 39.3%] or ZM [n = 21, 25.0%] suture lines. Conclusion: This study revealed that RTC remains a major aetiology of ZMC fractures and mini plate ostheosynthesis was the mainstay of surgical management. Enforcement of road safety regulations on speed and the use of protective measures by road users is imperative.
{"title":"Zygomatic complex fractures in a Nigerian tertiary hospital: An update on the pattern of presentation and care","authors":"O. Obimakinde, OA Olajuyin, A. Akinbade, K. Ojo, CO Ibidun, OT Ogunsakin","doi":"10.17352/2455-4634.000058","DOIUrl":"https://doi.org/10.17352/2455-4634.000058","url":null,"abstract":"Aim: The Zygomatic complex [ZMC], being one of the most commonly fractured bones in the facial skeleton, is largely underreported in the literature. This study was designed to evaluate the pattern of fractures, symptomatology, and treatment modalities at our institution. Materials and methods: Information on patients’ sociodemographics, the pattern of fractures, symptomatology, radiologic diagnosis, and treatment modalities were accessed from patients’ records on our trauma register. Data collected was analyzed with SPSS 20 and the level of significance was set at p < 0.05. Results: A total of 105 patients aged 19-66 years had ZMC fractures during the study period. A male preponderance was observed [M: F = 3.8:1] and road traffic crashes [RTC] accounted for the majority of fractures [79.0%]. There was a statistically significant relationship between RTC and fractures among the age groups [X2 = 33.61, df = 5, p = 0.001]. Fractures at the zygomatico-frontal [ZF] and in combination with zygomaticomaxillary [ZM] sutures were the commonest finding on imaging [39.1% % 28.6% respectively]. Subconjunctival and circumorbital ecchymosis [92.4% and 91.4% respectively] were the commonest symptomatology. Eighty four patients (80 %) were managed via surgical intervention and the most commonly employed surgical modality was mini plates [1.0mm] fixation across either ZF [n = 33, 39.3%] or ZM [n = 21, 25.0%] suture lines. Conclusion: This study revealed that RTC remains a major aetiology of ZMC fractures and mini plate ostheosynthesis was the mainstay of surgical management. Enforcement of road safety regulations on speed and the use of protective measures by road users is imperative.","PeriodicalId":144574,"journal":{"name":"International Journal of Oral and Craniofacial Science","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129696335","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 : 2022-10-18DOI: 10.17352/2455-4634.000057
Nieto Luis, León Oscar De, Smit Rolf, Paéz Zamir, Cháves Camilo
The reconstruction of the palate has been a challenge for the reconstructive surgeon, due to the multiple complications that arise, such as infection, dehiscence, and fall of the flap used. We present the description of a new radial free flap fixation technique, commonly used for this type of reconstruction. This transosteal fixation technique prevents dehiscence and flap descent in all cases performed, by combining two widely used procedures, the radial free flap, and the Lefort I osteotomy, with excellent results.
{"title":"Transosteal radial free flap in palate reconstruction","authors":"Nieto Luis, León Oscar De, Smit Rolf, Paéz Zamir, Cháves Camilo","doi":"10.17352/2455-4634.000057","DOIUrl":"https://doi.org/10.17352/2455-4634.000057","url":null,"abstract":"The reconstruction of the palate has been a challenge for the reconstructive surgeon, due to the multiple complications that arise, such as infection, dehiscence, and fall of the flap used. We present the description of a new radial free flap fixation technique, commonly used for this type of reconstruction. This transosteal fixation technique prevents dehiscence and flap descent in all cases performed, by combining two widely used procedures, the radial free flap, and the Lefort I osteotomy, with excellent results.","PeriodicalId":144574,"journal":{"name":"International Journal of Oral and Craniofacial Science","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117105426","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 : 2022-10-14DOI: 10.17352/2455-4634.000056
Khateeb Hiba, Machtei Eli E, Horwitz Jacob
Purposes: 1. to measure Gingival Thickness (GT) both directly and with CBCT using various exposure times, and compare them. 2. to compare hard tissue measurements between different exposure times within each CBCT system. The study hypothesis was that accuracy of CBCT GT measurement is impaired when reducing exposure time. Methods: 8 fresh pig maxillae were utilized for each of two CBCT scan systems (SysA and SysB). Eight disposable dental needles were inserted into the gingival tissue of each jaw until reaching resistance from the underlying bone. A mark on each needle at its entrance point into the soft tissue was created using a permanent marker. Jaws were scanned twice, using low (RadL) and high (RadH) exposure times. The needles were extruded, and an electronic caliper was used to measure the length of the penetrated portion of the needle in mm (Cli). Radiographic GT was measured on cross sectional images, produced in the axial direcion of the 3D location of the needles (Rad) in two software systems (R and I). Descriptive statistics, t-test and ANOVA were performed. Significance was set at 5%. Results: Software I mean Cli was 2.22mm ± 0.54mm, RadL and RadH were 2.34mm ± 0.47mm and 2.34mm ± 0.52mm. Software R RadL and RadH were 2.16mm ± 0.50mm and 2.23mm ± 0.49mm, respectively. Using pairwise comparisons, both soft and hard tissue RadL and RadH were not statistically different. There was a good correlation between clinical and radiographic measurements of gingival thickness and essentially no significant difference between higher and lower radiation doses. Conclusions: Reducing CBCT radiation may be possible without affecting accuracy of radiographic gingival thickness measurements , thus opening the way to a wider utilization of CBCT in dentistry. Clinical relevance: Reducing radiation dose may enable a wider utilization of CBCT in dentistry.
目的:1。直接测量牙龈厚度(GT)和使用不同暴露时间的CBCT测量牙龈厚度(GT)，并进行比较。2. 比较每个CBCT系统中不同暴露时间的硬组织测量值。该研究的假设是，当减少暴露时间时，CBCT GT测量的准确性会受到损害。方法:在两种CBCT扫描系统(SysA和SysB)中，各使用8只新鲜猪上颌骨。将8根一次性牙科针插入每个颌骨的牙龈组织，直到与底层骨骼产生阻力。在每根针进入软组织的入口点上，用永久性记号笔做了一个记号。下颌扫描两次，使用低(RadL)和高(RadH)曝光时间。将针头挤出，并用电子卡尺测量针头穿透部分的长度，单位为mm (Cli)。在两个软件系统(R和I)中，在针的三维位置(Rad)的轴向上产生的横截面图像上测量放射学GT。进行描述性统计、t检验和方差分析。显著性设为5%。结果:软件I mean Cli为2.22mm±0.54mm, RadL和RadH分别为2.34mm±0.47mm和2.34mm±0.52mm。软件R RadL和RadH分别为2.16mm±0.50mm和2.23mm±0.49mm。两两比较，软硬组织RadL和RadH均无统计学差异。临床和影像学测量的牙龈厚度之间有很好的相关性，高剂量和低剂量之间基本上没有显著差异。结论:在不影响影像学牙龈厚度测量精度的情况下，减少CBCT辐射是可能的，从而为CBCT在牙科的广泛应用开辟了道路。临床意义:降低辐射剂量可以使CBCT在牙科中得到更广泛的应用。
{"title":"The effect of radiation dose on CBCT measurements of maxillary gingival thickness","authors":"Khateeb Hiba, Machtei Eli E, Horwitz Jacob","doi":"10.17352/2455-4634.000056","DOIUrl":"https://doi.org/10.17352/2455-4634.000056","url":null,"abstract":"Purposes: 1. to measure Gingival Thickness (GT) both directly and with CBCT using various exposure times, and compare them. 2. to compare hard tissue measurements between different exposure times within each CBCT system. The study hypothesis was that accuracy of CBCT GT measurement is impaired when reducing exposure time. Methods: 8 fresh pig maxillae were utilized for each of two CBCT scan systems (SysA and SysB). Eight disposable dental needles were inserted into the gingival tissue of each jaw until reaching resistance from the underlying bone. A mark on each needle at its entrance point into the soft tissue was created using a permanent marker. Jaws were scanned twice, using low (RadL) and high (RadH) exposure times. The needles were extruded, and an electronic caliper was used to measure the length of the penetrated portion of the needle in mm (Cli). Radiographic GT was measured on cross sectional images, produced in the axial direcion of the 3D location of the needles (Rad) in two software systems (R and I). Descriptive statistics, t-test and ANOVA were performed. Significance was set at 5%. Results: Software I mean Cli was 2.22mm ± 0.54mm, RadL and RadH were 2.34mm ± 0.47mm and 2.34mm ± 0.52mm. Software R RadL and RadH were 2.16mm ± 0.50mm and 2.23mm ± 0.49mm, respectively. Using pairwise comparisons, both soft and hard tissue RadL and RadH were not statistically different. There was a good correlation between clinical and radiographic measurements of gingival thickness and essentially no significant difference between higher and lower radiation doses. Conclusions: Reducing CBCT radiation may be possible without affecting accuracy of radiographic gingival thickness measurements , thus opening the way to a wider utilization of CBCT in dentistry. Clinical relevance: Reducing radiation dose may enable a wider utilization of CBCT in dentistry.","PeriodicalId":144574,"journal":{"name":"International Journal of Oral and Craniofacial Science","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122685528","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 : 2022-09-02DOI: 10.17352/2455-4634.000055
Attal Jean-Pierre, Tirlet Gil, François Philippe, Caussin Elisa, Dursun Elisabeth
It is common to observe anterior teeth that present white opacities of enamel in relation to hypomineralization. These lesions alter social life of children and adults. There is a recent non-invasive treatment that can remove these stains without loss of substance, keeping tooth structure intact. This treatment modifies the optical properties of the white spot by infiltrating a polymer based on trimethylene glycol dimethacrylate (TEGDMA). This short article presents a method called erosion/ infiltration, which our team first described. Dentists must be aware of it, in order to treat patients with either fluorosis, MIH or trauma, so that much more invasive treatments such as veneers and crown can be avoided.
{"title":"The erosion/infiltration technique made by a polymer based on TEGDMA to mask the white lesions of the tooth","authors":"Attal Jean-Pierre, Tirlet Gil, François Philippe, Caussin Elisa, Dursun Elisabeth","doi":"10.17352/2455-4634.000055","DOIUrl":"https://doi.org/10.17352/2455-4634.000055","url":null,"abstract":"It is common to observe anterior teeth that present white opacities of enamel in relation to hypomineralization. These lesions alter social life of children and adults. There is a recent non-invasive treatment that can remove these stains without loss of substance, keeping tooth structure intact. This treatment modifies the optical properties of the white spot by infiltrating a polymer based on trimethylene glycol dimethacrylate (TEGDMA). This short article presents a method called erosion/ infiltration, which our team first described. Dentists must be aware of it, in order to treat patients with either fluorosis, MIH or trauma, so that much more invasive treatments such as veneers and crown can be avoided.","PeriodicalId":144574,"journal":{"name":"International Journal of Oral and Craniofacial Science","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124256023","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 : 2022-08-11DOI: 10.17352/2455-4634.000054
Balić Merima, Ovari Zoltan
Sjögren syndrome (SS) is a chronic autoimmune disease characterized by inflammation of salivary and lacrymal glands, causing oral and ocular dryness [1]. The syndrome was named by Swedish ophthalmologist Henrik Sjögren, who identified it in 1933. SS prevalence ranges between 0. 5 % and 3 % and the syndrome is more likely to affect females over 40 years old, especially in menopause [2, 3]. It is a slowly progressing, non-life-threatening disease with a 10-year cumulative survival rate of over 90 % [4].
{"title":"Oral rehabilitation of a patient with Sjögren syndrome","authors":"Balić Merima, Ovari Zoltan","doi":"10.17352/2455-4634.000054","DOIUrl":"https://doi.org/10.17352/2455-4634.000054","url":null,"abstract":"Sjögren syndrome (SS) is a chronic autoimmune disease characterized by inflammation of salivary and lacrymal glands, causing oral and ocular dryness [1]. The syndrome was named by Swedish ophthalmologist Henrik Sjögren, who identified it in 1933. SS prevalence ranges between 0. 5 % and 3 % and the syndrome is more likely to affect females over 40 years old, especially in menopause [2, 3]. It is a slowly progressing, non-life-threatening disease with a 10-year cumulative survival rate of over 90 % [4].","PeriodicalId":144574,"journal":{"name":"International Journal of Oral and Craniofacial Science","volume":"189 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114519846","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 : 2022-06-21DOI: 10.17352/2455-4634.000053
RB Kerstein
New technological developments in modern dental medicine offer clinicians insight and treatment advances to many outdated, dogmatic concepts that have been widely believed for many years, despite there being a lack of scientific evidence to support them. This is especially true in the field of Dental Occlusion, whose scientific development has been hampered by the use of traditional, non-digital occlusal indicators that do not quantify occlusion, other than possibly describing “contact area”.
{"title":"Commentary-practicing state of the art occlusion in the Digital Era of Dentistry","authors":"RB Kerstein","doi":"10.17352/2455-4634.000053","DOIUrl":"https://doi.org/10.17352/2455-4634.000053","url":null,"abstract":"New technological developments in modern dental medicine offer clinicians insight and treatment advances to many outdated, dogmatic concepts that have been widely believed for many years, despite there being a lack of scientific evidence to support them. This is especially true in the field of Dental Occlusion, whose scientific development has been hampered by the use of traditional, non-digital occlusal indicators that do not quantify occlusion, other than possibly describing “contact area”.","PeriodicalId":144574,"journal":{"name":"International Journal of Oral and Craniofacial Science","volume":"12 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115412712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Background: The purpose of this article is to verify the possible correlation between TMD (Temporomandibular Disorders) and different types of malocclusions in adult subjects and subsequently that between TMD and previous orthodontic treatment. Materials and methods: A retrospective observational study was conducted in San Paolo e Carlo Hospital, associates of the University of Milan, for a period of 2 years (1st February 2019 – 3rd March 2020), on 374 adult patients (244 females and 130 males). The subjects underwent an intraoral examination with a gnathological assessment, in order to distinguish those who suffered from TMD and those who did not. Secondly, the patients were subjected to orthodontic examination to identify those who had previously undergone orthodontic treatment, assessing through an extraoral and intraoral examination, the dental class, the type of dental bite and the presence or absence of a midline deviation. Results: The data analysis revealed a statistically significant association between TMD and gender (p= 0.023, OR= 1.66). The association between class I, II, III malocclusions and the presence of TMD was found to be statistically significant: p<0.0001 (OR= 4.04) and that between open/deep bite and the presence of TMD too: p= 0.003 (OR= 1.89). Moreover, the correlation between midline deviation and the presence of TMD was statistically significant: p<0.0001 (OR=7.48). On the other hand, no correlation was found between TMD and previous orthodontic treatment (p= 0.918). Conclusions: The available data revealed a statistically significant association between TMD and malocclusions, related to dental class and bite and midline deviation, although the existing results in the literature are controversial regarding this association. While no statistically significant correlation was found between TMD and previous orthodontic treatment. Orthodontic therapy, therefore, by correcting occlusion anomalies, could reduce the risk of TMD incidence. Finally, longitudinal studies with adequate statistical power are needed to clarify the possible interrelationships between TMD and malocclusions.
{"title":"Correlation between temporomandibular disorders and malocclusions: A retrospective observational study-can malocclusions or previous orthodontic treatments affect Temporo-Mandibular Disorders?","authors":"Marchesi Alessandro, Bellini Dorothea, Sardella Andrea, Fornarelli Giulia, Zefi Tomson","doi":"10.17352/2455-4634.000051","DOIUrl":"https://doi.org/10.17352/2455-4634.000051","url":null,"abstract":"Background: The purpose of this article is to verify the possible correlation between TMD (Temporomandibular Disorders) and different types of malocclusions in adult subjects and subsequently that between TMD and previous orthodontic treatment. Materials and methods: A retrospective observational study was conducted in San Paolo e Carlo Hospital, associates of the University of Milan, for a period of 2 years (1st February 2019 – 3rd March 2020), on 374 adult patients (244 females and 130 males). The subjects underwent an intraoral examination with a gnathological assessment, in order to distinguish those who suffered from TMD and those who did not. Secondly, the patients were subjected to orthodontic examination to identify those who had previously undergone orthodontic treatment, assessing through an extraoral and intraoral examination, the dental class, the type of dental bite and the presence or absence of a midline deviation. Results: The data analysis revealed a statistically significant association between TMD and gender (p= 0.023, OR= 1.66). The association between class I, II, III malocclusions and the presence of TMD was found to be statistically significant: p<0.0001 (OR= 4.04) and that between open/deep bite and the presence of TMD too: p= 0.003 (OR= 1.89). Moreover, the correlation between midline deviation and the presence of TMD was statistically significant: p<0.0001 (OR=7.48). On the other hand, no correlation was found between TMD and previous orthodontic treatment (p= 0.918). Conclusions: The available data revealed a statistically significant association between TMD and malocclusions, related to dental class and bite and midline deviation, although the existing results in the literature are controversial regarding this association. While no statistically significant correlation was found between TMD and previous orthodontic treatment. Orthodontic therapy, therefore, by correcting occlusion anomalies, could reduce the risk of TMD incidence. Finally, longitudinal studies with adequate statistical power are needed to clarify the possible interrelationships between TMD and malocclusions.","PeriodicalId":144574,"journal":{"name":"International Journal of Oral and Craniofacial Science","volume":"115 18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126369944","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 : 2021-11-05DOI: 10.17352/2455-4634.000050
Patel Nimeshkumar, Mistry Ekta
Introduction: Cone Beam Computed Tomography (CBCT) has transformed the manner in which radiological evaluation is performed. Methods: This article discusses the different aspects of CBCT, common dental applications of CBCT for diagnosis and treatment in different dental specialties from the current literature. Results: CBCT has been widely accepted into different dental practices. The main reasons are the decreased size, low cost, less exposure to radiation as compared to computed tomography. CBCT enables the three dimensional assessment of the region of maxilla, mandible, cranium, and associated structures. Conclusions: Dentists and dental specialists can utilize three dimensional radiography- CBCT for a comprehensive diagnosis. CBCT can also help in identifying the structures such as root canals, bifurcated canals, supernumerary teeth, impacted teeth in different planes and thus are a valuable tool for dental treatment planning.
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