In the oral environment, the longevity and durability of aesthetic composite resin restorative materials are critical considerations. However, many studies have been done on the effect of certain mouthwashes on the surface hardness and accuracy of composite resin. Therefore, this study aims to examine the effect of GUM® alcohol-free and Listerine alcohol-contained mouthwashes on the surface hardness and dimensional accuracy of cured and dual-cured visible light-cured composite.Methods: Thirty-disc specimens of Nanohybrid light-cured composite resin were prepared according to ISO standardization (4049/2000). The sample was divided into three groups (n=10), the Control non-treated in distilled water; Alcohol-free GUM® and Alcohol-contained Listerine mouthwashes. The surface hardness and dimensional accuracy of specimens were measured at different immersion intervals. These include initial immersion, after one and four weeks, and after the light dual-curing procedure. Data were analyzed via one-way ANOVA (post-hoc Tukey test) performed at a significant P-value of (p ≤.05) and confidence level of 95%.Conclusion: After the dual-curing process, the alcohol-free GUM® mouthwash showed a reduction in the surface hardness of the composite material. Listerine mouthwash had a static reduction in the composite specimen in diameters.
在口腔环境中，美观的复合树脂修复材料的寿命和耐久性是至关重要的考虑因素。然而，关于某些漱口水对复合树脂表面硬度和精度的影响，已经有很多研究。因此，本研究旨在探讨 GUM® 无酒精漱口水和李施德林含酒精漱口水对固化和双固化可见光固化复合树脂表面硬度和尺寸精度的影响：根据 ISO 标准（4049/2000）制备了 30 盘 Nanohybrid 光固化复合树脂试样。样品分为三组（n=10），分别是未经蒸馏水处理的对照组、不含酒精的 GUM® 组和含酒精的李施德林漱口水组。试样的表面硬度和尺寸精度在不同的浸泡时间间隔内进行测量。其中包括初始浸泡、一周和四周后以及光照双固化程序后。数据分析采用单因素方差分析（事后 Tukey 检验），显著性 P 值为（P ≤.05），置信水平为 95%：双固化工艺后，不含酒精的 GUM® 漱口水降低了复合材料的表面硬度。李施德林漱口水静态降低了复合材料试样的直径。
{"title":"Mouthwashes: Surface Hardness and Accuracy of Dual-cured Visible Light-Cured Composite","authors":"Saja Ali Muhsin, Ihab Nafea Yaseen","doi":"10.25130/tjds.11.2.14","DOIUrl":"https://doi.org/10.25130/tjds.11.2.14","url":null,"abstract":"In the oral environment, the longevity and durability of aesthetic composite resin restorative materials are critical considerations. However, many studies have been done on the effect of certain mouthwashes on the surface hardness and accuracy of composite resin. Therefore, this study aims to examine the effect of GUM® alcohol-free and Listerine alcohol-contained mouthwashes on the surface hardness and dimensional accuracy of cured and dual-cured visible light-cured composite.Methods: Thirty-disc specimens of Nanohybrid light-cured composite resin were prepared according to ISO standardization (4049/2000). The sample was divided into three groups (n=10), the Control non-treated in distilled water; Alcohol-free GUM® and Alcohol-contained Listerine mouthwashes. The surface hardness and dimensional accuracy of specimens were measured at different immersion intervals. These include initial immersion, after one and four weeks, and after the light dual-curing procedure. Data were analyzed via one-way ANOVA (post-hoc Tukey test) performed at a significant P-value of (p ≤.05) and confidence level of 95%.Conclusion: After the dual-curing process, the alcohol-free GUM® mouthwash showed a reduction in the surface hardness of the composite material. Listerine mouthwash had a static reduction in the composite specimen in diameters.","PeriodicalId":512116,"journal":{"name":"Tikrit Journal for Dental Sciences","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139439265","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}
Studies in a variety of scientific disciplines have experimented with various techniques for recycling and reusing the materials they utilize on a regular basis, in this study suggest to re cycling waste of acetal resin.Purpose: The purpose of this study was to assess and compare the color change of re-injection acetal resin with different percentages or several times.Material and Methods: Specimens were prepared with dimensions (20±1 mm in diameter x 0.5 mm in thickness) for color stability test and injection according to the manufacture’s instruction for acetal resin as denture base materials and aesthetic clasp. The first group represent control group with (100% New) and other five groups as experimental groups (group II, group III, and group III) with different percentages between new acetal materials and old acetal materials, while two last groups with several times (group IV and group V) only used old acetal materials. Preparation the ratio between the new material with the old material according to pilot study and the best ratio in this study is 25% new acetal material and 75% old acetal material (group II). The old material is preparation by acetal sprue is collected and cutting by cutter and re-injection with new acetal resin.Results: Statistically non-significant difference in color change in re-injection acetal resin, when comparing the control group with mean (1.046±0.094) and re-injection groups with means respectively (1.040 ±0.076,0.942±0.115,0.993±0.137, 0.978±0.060, and 0.970±0.098).Conclusion: Color change was statistically non-significant differences between all studied groups.
目的：本研究的目的是评估和比较不同比例或多次重新注射乙缩醛树脂的颜色变化：制备直径为 20±1 mm x 厚度为 0.5 mm 的试样，用于颜色稳定性测试，并根据生产说明注射乙缩醛树脂作为义齿基托材料和美学卡环。第一组为对照组（100% 新），其他五组为实验组（第二组、第三组和第三组），新旧乙缩醛树脂材料的比例各不相同，最后两组（第四组和第五组）多次使用旧乙缩醛树脂材料。新材料与旧材料的配制比例是根据试验研究确定的，本研究的最佳比例是 25% 的新乙缩醛材料和 75% 的旧乙缩醛材料（第二组）。旧材料的制备方法是收集乙缩醛浇口并用切割机切割，然后重新注入新的乙缩醛树脂：结果：对照组平均值（1.046±0.094）与重新注射组平均值（1.040±0.076,0.942±0.115,0.993±0.137,0.978±0.060,0.970±0.098）相比，重新注射乙缩醛树脂的颜色变化差异无统计学意义：所有研究组的颜色变化在统计学上无显著差异。
{"title":"Color Stability of Re-Injection Acetal Resin with Different Percentages or Several Times","authors":"Rasha Mohammed Zwwyer, Nidhal Sahib Mansoor","doi":"10.25130/tjds.11.2.1","DOIUrl":"https://doi.org/10.25130/tjds.11.2.1","url":null,"abstract":"Studies in a variety of scientific disciplines have experimented with various techniques for recycling and reusing the materials they utilize on a regular basis, in this study suggest to re cycling waste of acetal resin.Purpose: The purpose of this study was to assess and compare the color change of re-injection acetal resin with different percentages or several times.Material and Methods: Specimens were prepared with dimensions (20±1 mm in diameter x 0.5 mm in thickness) for color stability test and injection according to the manufacture’s instruction for acetal resin as denture base materials and aesthetic clasp. The first group represent control group with (100% New) and other five groups as experimental groups (group II, group III, and group III) with different percentages between new acetal materials and old acetal materials, while two last groups with several times (group IV and group V) only used old acetal materials. Preparation the ratio between the new material with the old material according to pilot study and the best ratio in this study is 25% new acetal material and 75% old acetal material (group II). The old material is preparation by acetal sprue is collected and cutting by cutter and re-injection with new acetal resin.Results: Statistically non-significant difference in color change in re-injection acetal resin, when comparing the control group with mean (1.046±0.094) and re-injection groups with means respectively (1.040 ±0.076,0.942±0.115,0.993±0.137, 0.978±0.060, and 0.970±0.098).Conclusion: Color change was statistically non-significant differences between all studied groups.","PeriodicalId":512116,"journal":{"name":"Tikrit Journal for Dental Sciences","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139440191","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: The objective of this research was to investigate how boron nitride powder addition in percentages of 1% weight and 1.5% weight, affected the thermal conductivity, transverse strength, and surface hardness of heat cured acrylic resin denture base material. Methods: Ninety specimens were made from heat-cured acrylic resin and then divided into three groups based on the tests: a control group, a reinforced poly methyl methacrylate group with 1% weight boron nitride particles, and a reinforced poly methyl methacrylate group with 1.5% weight boron nitride particles. They investigated into the thermal conductivity, transverse strength, and surface hardness tests. Results: This research showed that 1% and 1.5% weight boron nitride particles significantly increased thermal conductivity and surface hardness in comparison to the controlled group. There was a highly significant increase in transverse strength compared to the control group; at the concentration of 1% weight boron nitride particles. Conclusion: Boron nitride particles enhance the thermal conductivity, transverse strength, and surface hardness when added to heat cure acrylic resin denture base material.
{"title":"The Role of Boron Nitride Particles on Thermal Conductivity, Transverse Strength and Surface Hardness of Heat Cure Acrylic Resin","authors":"Hussein Ali M. Hussein, Hikmat J. Al-Judy","doi":"10.25130/tjds.11.2.21","DOIUrl":"https://doi.org/10.25130/tjds.11.2.21","url":null,"abstract":"Objectives: The objective of this research was to investigate how boron nitride powder addition in percentages of 1% weight and 1.5% weight, affected the thermal conductivity, transverse strength, and surface hardness of heat cured acrylic resin denture base material. Methods: Ninety specimens were made from heat-cured acrylic resin and then divided into three groups based on the tests: a control group, a reinforced poly methyl methacrylate group with 1% weight boron nitride particles, and a reinforced poly methyl methacrylate group with 1.5% weight boron nitride particles. They investigated into the thermal conductivity, transverse strength, and surface hardness tests. Results: This research showed that 1% and 1.5% weight boron nitride particles significantly increased thermal conductivity and surface hardness in comparison to the controlled group. There was a highly significant increase in transverse strength compared to the control group; at the concentration of 1% weight boron nitride particles. Conclusion: Boron nitride particles enhance the thermal conductivity, transverse strength, and surface hardness when added to heat cure acrylic resin denture base material.","PeriodicalId":512116,"journal":{"name":"Tikrit Journal for Dental Sciences","volume":"36 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139441396","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}
Ula A. Fathi, Zena A. Ahmad, Jumana Abdulbari Abduljawad, Zena Mohammad younis
Aim: This study was assumed to investigate the effect of incorporation of nanoparticles “Titanium Dioxide Nanoparticles (TiO2)” in two different percentages which are 3% and 5% (by weight) on compressive strength and surface roughness of glass ionomer cement (GIC) so to improve the conventional glass ionomer cement properties.Materials and Methods: the powder of GIC was incorporated with TiO2 nanoparticles at two concentrations: 3% and 5% (w/w). An unmodified conventional GIC used as the control group. Ten specimens of each GIC group were used to study the compressive strength using a Universal Testing Machine. Also, 10 discs from each GIC group were used for surface roughness measurement by using profilometer. one way analysis of variance ANOVA test and Tukey’s test were used to analyze data. Results: Nanoparticles incorporation to GIC lead to improve its compressive strength for both percentages 3% and 5%, Tukey’s test showed a significant increase in compressive strength between nanoparticles incorporated and conventional group. The surface roughness measurement also show significantly improvement in both 3% and 5% nanoparticles groups (p<0.05). Conclusion: GIC with TiO2 nanoparticles.
{"title":"Compressive Strength and Surface Roughness of Nanoparticles Enriched Glass Ionomer Cement","authors":"Ula A. Fathi, Zena A. Ahmad, Jumana Abdulbari Abduljawad, Zena Mohammad younis","doi":"10.25130/tjds.11.2.3","DOIUrl":"https://doi.org/10.25130/tjds.11.2.3","url":null,"abstract":"Aim: This study was assumed to investigate the effect of incorporation of nanoparticles “Titanium Dioxide Nanoparticles (TiO2)” in two different percentages which are 3% and 5% (by weight) on compressive strength and surface roughness of glass ionomer cement (GIC) so to improve the conventional glass ionomer cement properties.Materials and Methods: the powder of GIC was incorporated with TiO2 nanoparticles at two concentrations: 3% and 5% (w/w). An unmodified conventional GIC used as the control group. Ten specimens of each GIC group were used to study the compressive strength using a Universal Testing Machine. Also, 10 discs from each GIC group were used for surface roughness measurement by using profilometer. one way analysis of variance ANOVA test and Tukey’s test were used to analyze data. Results: Nanoparticles incorporation to GIC lead to improve its compressive strength for both percentages 3% and 5%, Tukey’s test showed a significant increase in compressive strength between nanoparticles incorporated and conventional group. The surface roughness measurement also show significantly improvement in both 3% and 5% nanoparticles groups (p<0.05). Conclusion: GIC with TiO2 nanoparticles.","PeriodicalId":512116,"journal":{"name":"Tikrit Journal for Dental Sciences","volume":"7 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139439953","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}
Post-heat treatment may enhance mechanical properties of selective laser melting (SLM) Cobalt chromium (Co-Cr) alloys, however it is unknown what duration the heat treatment needs to last and how the rate of cooling impacts the alloy's flexural strength and surface roughness. In this study, SLM Co-Cr alloy specimens were heated at 1150 C for 1 or 6 hours and subsequently cooled by air cooling (AC), furnace cooling (FC), or water quenching (WC). Flexural strength and surface roughness were then tested. Aim of this study: Investigate the effect of heat treatment and different cooling conditions on the flexural strength and surface roughness of SLM Co-Cr alloy specimens. The heat treatment will be conducted at 1150 C for two different durations (1-hour and 6-hours) and under three cooling conditions (AC, FC, and WC). Materials and methods: A total of forty-two rectangular specimens, measuring (34×13×1.5 mm) were manufactured through SLM and divided into seven groups, six specimens for each group as follows: The first group denoted as control with no heat treatment and no cooling applied, second and third groups heated for 1 or 6 hours then cooled in the air (AH-1 and AH-6), fourth and fifth groups heated for 1 or 6 hours and left inside the furnace until they cooled (FH-1 and FH-6), sixth and seventh groups heated for 1 or 6 hours and cooled by water quenching (WH-1 and WH-6). Flexural strength and surface roughness tests were performed on the specimens. A flexural strength value of (2147.33 MPa) was indicated that the control group exhibited the highest flexural strength, whereas the FH-6 group exhibited the lowest flexural strength value (1282.66 MPa). The control group showed the worst surface roughness (1.63 μm) while all other groups demonstrated no significant differences in surface roughness ranging from (0.32 to 0.49 μm) with a slight increase in the 6-hours heated groups. Conclusions: Slow cooling rate inside the furnace affects flexural strength negatively. Therefore, a high cooling rate is recommended to get a better flexural strength. On the other hand, surface roughness results suggests that 1-hour is better than 6-hours in terms of heat treatment duration and time saving
{"title":"Effect of Heat Treatment Duration and Cooling Conditions on Flexural Strength and Surface Roughness of Cobalt-Chromium Alloys produced by Selective-Laser-Melting","authors":"Mohammed Nashwan Almulayounis, Ahmed Asim Ali","doi":"10.25130/tjds.11.2.6","DOIUrl":"https://doi.org/10.25130/tjds.11.2.6","url":null,"abstract":"Post-heat treatment may enhance mechanical properties of selective laser melting (SLM) Cobalt chromium (Co-Cr) alloys, however it is unknown what duration the heat treatment needs to last and how the rate of cooling impacts the alloy's flexural strength and surface roughness. In this study, SLM Co-Cr alloy specimens were heated at 1150 C for 1 or 6 hours and subsequently cooled by air cooling (AC), furnace cooling (FC), or water quenching (WC). Flexural strength and surface roughness were then tested. Aim of this study: Investigate the effect of heat treatment and different cooling conditions on the flexural strength and surface roughness of SLM Co-Cr alloy specimens. The heat treatment will be conducted at 1150 C for two different durations (1-hour and 6-hours) and under three cooling conditions (AC, FC, and WC). Materials and methods: A total of forty-two rectangular specimens, measuring (34×13×1.5 mm) were manufactured through SLM and divided into seven groups, six specimens for each group as follows: The first group denoted as control with no heat treatment and no cooling applied, second and third groups heated for 1 or 6 hours then cooled in the air (AH-1 and AH-6), fourth and fifth groups heated for 1 or 6 hours and left inside the furnace until they cooled (FH-1 and FH-6), sixth and seventh groups heated for 1 or 6 hours and cooled by water quenching (WH-1 and WH-6). Flexural strength and surface roughness tests were performed on the specimens. A flexural strength value of (2147.33 MPa) was indicated that the control group exhibited the highest flexural strength, whereas the FH-6 group exhibited the lowest flexural strength value (1282.66 MPa). The control group showed the worst surface roughness (1.63 μm) while all other groups demonstrated no significant differences in surface roughness ranging from (0.32 to 0.49 μm) with a slight increase in the 6-hours heated groups. Conclusions: Slow cooling rate inside the furnace affects flexural strength negatively. Therefore, a high cooling rate is recommended to get a better flexural strength. On the other hand, surface roughness results suggests that 1-hour is better than 6-hours in terms of heat treatment duration and time saving","PeriodicalId":512116,"journal":{"name":"Tikrit Journal for Dental Sciences","volume":"10 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139439293","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 main disadvantage of soft liners is the low thermal conductivity between the denture base and soft liner material.Aim: The present study aims to estimate the impact of adding virgin coconut oil (1.5% vol and 2.5% vol) to a soft acrylic liner material in a thermal conductivity test.Material and Methods: For this project, we did 30 pieces of acrylic soft liner material. The specimens were divided into three groups: 10 control group specimens that only contained the soft liner material, 10 specimens mixed with virgin coconut oil at a volume of 1.5% with the soft liner material, and 10 specimens mixed with virgin coconut oil at a volume of 2.5% with the soft liner material. Equipment in the Technologies, Department used to conduct thermal conductivity tests. 40mm diameter and 2.5mm thickness thermal conductivity specimens were prepared.Results: Using static analysis, data showed that the soft liner with the highest thermal conductivity contained virgin coconut oil at a volume of 2.5% compared to the soft liner containing virgin coconut oil at a volume of 1.5%, and the control group, the results revealed p < 0.01.Conclusion: Thermal conductivity is increased when virgin coconut oil (2.5% by volume) is incorporated into the soft acrylic liner material.
{"title":"Evaluation of Effect the Incorporation of The Virgin Coconut Oil on Thermal Conductivity of Heat-Cure Acrylic Soft Denture Lining Materials","authors":"Ameer Qassim Mohammed, Makarem Abdul Rassol Jaber","doi":"10.25130/tjds.11.2.9","DOIUrl":"https://doi.org/10.25130/tjds.11.2.9","url":null,"abstract":"Background: The main disadvantage of soft liners is the low thermal conductivity between the denture base and soft liner material.Aim: The present study aims to estimate the impact of adding virgin coconut oil (1.5% vol and 2.5% vol) to a soft acrylic liner material in a thermal conductivity test.Material and Methods: For this project, we did 30 pieces of acrylic soft liner material. The specimens were divided into three groups: 10 control group specimens that only contained the soft liner material, 10 specimens mixed with virgin coconut oil at a volume of 1.5% with the soft liner material, and 10 specimens mixed with virgin coconut oil at a volume of 2.5% with the soft liner material. Equipment in the Technologies, Department used to conduct thermal conductivity tests. 40mm diameter and 2.5mm thickness thermal conductivity specimens were prepared.Results: Using static analysis, data showed that the soft liner with the highest thermal conductivity contained virgin coconut oil at a volume of 2.5% compared to the soft liner containing virgin coconut oil at a volume of 1.5%, and the control group, the results revealed p < 0.01.Conclusion: Thermal conductivity is increased when virgin coconut oil (2.5% by volume) is incorporated into the soft acrylic liner material.","PeriodicalId":512116,"journal":{"name":"Tikrit Journal for Dental Sciences","volume":"89 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139440434","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}
Temporo-mandibular joint function has been extensively studied for more despite extensive investigation, the complicated etiology of TMJ dysfunction has remained a mystery for more than a century. Temporomandibular disorder (TMD) is a sub - class of painful orofacial conditions characterized by complaints of pain in the region of the temporomandibular joint (TMJ), difficulty concentrating craniocervicofacial muscles, especially mastication muscles, limitations of mandibular movement, and the presence of articular clicking. Emotional stress, occlusal interferences, tooth loss, postural deviation, muscles of mastication neuromuscular both internal and external dysfunction anomalies in Temporo-mandibular joint anatomy, and the multiple interrelationships between these factors all contribute to the complicated etiology of TMD.Aim: Determine the prevalence of temporomandibular joint disorder between college students. The sample for this sectional potential study consisted of 691 college students (339 male and 352 female). Self-reported questionnaires were used to determine the incidence and severity of TMJ disorders. By virtue of the quantity and frequency of notable replies, the rankings were upgraded to an intensity ranking. Results:56.6% of students reported some level of TMD, including 39.7% with mild TMD, 12.2% with moderate TMD, and 4.6% with severe TMD. Historically, no significant correlation between gender and TMD severity was observed.Conclusion: This student population exhibited a high prevalence of TMD; however, the majority of cases were mild. The statistical significance of the association between TMD severity and gender is no longer proven. Despite having TMD. The students had little knowledge of their conditions.
{"title":"Study of Prevalence of Temporomandibular Disorders among Undergraduate Students","authors":"Maher M. Jwaid","doi":"10.25130/tjds.11.2.17","DOIUrl":"https://doi.org/10.25130/tjds.11.2.17","url":null,"abstract":"Temporo-mandibular joint function has been extensively studied for more despite extensive investigation, the complicated etiology of TMJ dysfunction has remained a mystery for more than a century. Temporomandibular disorder (TMD) is a sub - class of painful orofacial conditions characterized by complaints of pain in the region of the temporomandibular joint (TMJ), difficulty concentrating craniocervicofacial muscles, especially mastication muscles, limitations of mandibular movement, and the presence of articular clicking. Emotional stress, occlusal interferences, tooth loss, postural deviation, muscles of mastication neuromuscular both internal and external dysfunction anomalies in Temporo-mandibular joint anatomy, and the multiple interrelationships between these factors all contribute to the complicated etiology of TMD.Aim: Determine the prevalence of temporomandibular joint disorder between college students. The sample for this sectional potential study consisted of 691 college students (339 male and 352 female). Self-reported questionnaires were used to determine the incidence and severity of TMJ disorders. By virtue of the quantity and frequency of notable replies, the rankings were upgraded to an intensity ranking. Results:56.6% of students reported some level of TMD, including 39.7% with mild TMD, 12.2% with moderate TMD, and 4.6% with severe TMD. Historically, no significant correlation between gender and TMD severity was observed.Conclusion: This student population exhibited a high prevalence of TMD; however, the majority of cases were mild. The statistical significance of the association between TMD severity and gender is no longer proven. Despite having TMD. The students had little knowledge of their conditions.","PeriodicalId":512116,"journal":{"name":"Tikrit Journal for Dental Sciences","volume":"1 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139439009","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}
Road traffic accidents (RTAs) are a leading cause of maxillofacial trauma and facial bone fractures. The present study aims to investigate the relationship between facial bone fractures, trauma severity, and the use of seat belts among passengers involved in road traffic accidents in Diyala Governorate, Iraq. To detect the relation of facial bone fractures and severity of trauma in relation to position of passenger and seat belts wearing during road traffic accident in Iraq, Diyala Governorate, especially these Governorate considered the main land road linking the capital and the southern governorates with the governorates of the Kurdistan province. This retrospective study examined patients with facial bone fractures admitted to Baquba Teaching Hospital in Diyala Governorate from October 2020 to September 2022. The study analyzed the data to determine the incidence of facial bone fractures and their severity in relation to the position of the passenger and the use of seat belts during road traffic accidents. Results: A total of 200 individuals were identified as having sustained 464 maxillofacial fractures as a result of road traffic accidents while seated inside a vehicle. The study revealed that the average number of fractures per patient was lowest (0.8 fractures per patient) among front passengers who were wearing seat belts. Drivers who wore seat belts had a slightly higher average number of fractures (2.8 fractures per patient). In contrast, rear passengers who did not wear seat belts had the highest average number of fractures (11 fractures per patient). CONCLUSION: The findings of this study emphasize the significant role of seat belts in reducing the occurrence of facial bone fractures, particularly for drivers and front passengers. In contrast, rear passengers who did not use seat belts were particularly vulnerable to facial bone fractures. These results underscore the importance of seat belt usage as an effective measure to minimize facial bone injuries in road traffic accidents. Further research with more comprehensive details is warranted to strengthen the understanding of the relationship between seat belt usage and facial bone fractures in Iraq.
{"title":"Road Traffic Accidents in Iraq and the Seat Belts Benefit in Minimizing the Injuries","authors":"Ali Hakeem Tofiq, Saif Hakeem Tofiq","doi":"10.25130/tjds.11.2.15","DOIUrl":"https://doi.org/10.25130/tjds.11.2.15","url":null,"abstract":"Road traffic accidents (RTAs) are a leading cause of maxillofacial trauma and facial bone fractures. The present study aims to investigate the relationship between facial bone fractures, trauma severity, and the use of seat belts among passengers involved in road traffic accidents in Diyala Governorate, Iraq. To detect the relation of facial bone fractures and severity of trauma in relation to position of passenger and seat belts wearing during road traffic accident in Iraq, Diyala Governorate, especially these Governorate considered the main land road linking the capital and the southern governorates with the governorates of the Kurdistan province. This retrospective study examined patients with facial bone fractures admitted to Baquba Teaching Hospital in Diyala Governorate from October 2020 to September 2022. The study analyzed the data to determine the incidence of facial bone fractures and their severity in relation to the position of the passenger and the use of seat belts during road traffic accidents. Results: A total of 200 individuals were identified as having sustained 464 maxillofacial fractures as a result of road traffic accidents while seated inside a vehicle. The study revealed that the average number of fractures per patient was lowest (0.8 fractures per patient) among front passengers who were wearing seat belts. Drivers who wore seat belts had a slightly higher average number of fractures (2.8 fractures per patient). In contrast, rear passengers who did not wear seat belts had the highest average number of fractures (11 fractures per patient). CONCLUSION: The findings of this study emphasize the significant role of seat belts in reducing the occurrence of facial bone fractures, particularly for drivers and front passengers. In contrast, rear passengers who did not use seat belts were particularly vulnerable to facial bone fractures. These results underscore the importance of seat belt usage as an effective measure to minimize facial bone injuries in road traffic accidents. Further research with more comprehensive details is warranted to strengthen the understanding of the relationship between seat belt usage and facial bone fractures in Iraq.","PeriodicalId":512116,"journal":{"name":"Tikrit Journal for Dental Sciences","volume":"2 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139439350","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: The aim of this research was to investigate how distilled water, tea, coffee, and cola affected the surface roughness of poly ether ether ketone CAD-CAM, 3D printing, and heat cure acrylic resin denture bases at specific intervals (6 ,12days). Materials and Methods: Disk shape 10 mm (diameter) ×2 m m (thickness), manufactured from materials used which were PEEK, 3D printing and heat cure acrylic resin. Total number of samples are n= (75) samples, control samples not immersed in beverage media n= 15, experimental samples immersed in beverage solutions (distilled water, tea, coffee and cola) n=60 for evaluating the surface roughness at (6, 12 and 24 days) .Then all collecting data were statically analyzed by spss v ersion 25, by means of descriptive statistics, analysis of variance (ANOVA) and duncan multiple range tests at p ≤ 0.05. The Results: The results revealed a significant increase in surface roughness in all beverage solutions at p ≤ 0.0 5. Conclusions: All beverage solutions had a negative effect on surface roughness of all experimental materials, the surface roughness increased. cola had the most aggressive effect followed by coffee then tea and distilled water have the least ef fect.
{"title":"Effect of Beverage Solutions on Surface Roughness of PEEK CAD –CAM, 3D Printing Denture Base and Heat Cure Acrylic Resin Denture Base Materials","authors":"Noor Muwafaq Fadhil, Nada Zuhair Mohammed","doi":"10.25130/tjds.11.2.4","DOIUrl":"https://doi.org/10.25130/tjds.11.2.4","url":null,"abstract":"The Aim: The aim of this research was to investigate how distilled water, tea, coffee, and cola affected the surface roughness of poly ether ether ketone CAD-CAM, 3D printing, and heat cure acrylic resin denture bases at specific intervals (6 ,12days). Materials and Methods: Disk shape 10 mm (diameter) ×2 m m (thickness), manufactured from materials used which were PEEK, 3D printing and heat cure acrylic resin. Total number of samples are n= (75) samples, control samples not immersed in beverage media n= 15, experimental samples immersed in beverage solutions (distilled water, tea, coffee and cola) n=60 for evaluating the surface roughness at (6, 12 and 24 days) .Then all collecting data were statically analyzed by spss v ersion 25, by means of descriptive statistics, analysis of variance (ANOVA) and duncan multiple range tests at p ≤ 0.05. The Results: The results revealed a significant increase in surface roughness in all beverage solutions at p ≤ 0.0 5. Conclusions: All beverage solutions had a negative effect on surface roughness of all experimental materials, the surface roughness increased. cola had the most aggressive effect followed by coffee then tea and distilled water have the least ef fect.","PeriodicalId":512116,"journal":{"name":"Tikrit Journal for Dental Sciences","volume":"10 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139439868","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: All ceramic CAD/CAM materials require surface treatment protocols varying from one type to another according to their chemical composition, including hydrofluoric acid etching, sandblasting, silica coating, laser etching, and non-thermal plasma treatment. This review's objective to analyze and bring up-to-date data about the surface treatment of ceramics.Data: The review just searched electronic publications of papers. Websites "Google Scholar" and "PubMed" were utilized as sources for performing data searches using the following keywords: Surface modification, plasma surface treatment, indirect restoration, ceramics The original papers and clinical investigations that were published between the years 2006 to March 2023 that were the most relevant to the subject at hand were chosen.Conclusion: A variety of surface treatment methods have been proposed to enhance the bonding of restorative materials to resin cement and provide micromechanical retention by altering the restoration's surface mechanically by increasing the degree of roughness or physico/chemically by activating the surface. Hydrophloric acid etch is a golden standard for the surface treatment of feldspathic and lithium disilicate ceramics, the APC concept for zirconia, and hydrofluoric acid or sandblast surface treatment for resin nano-ceramic. A new approach used for surface treatment is plasma treatment, which is really promising in dentistry.
{"title":"Surface Treatment of Indirect Restorations","authors":"Shahad Jabbar Jassim, Manhal A. Majeed","doi":"10.25130/tjds.11.2.18","DOIUrl":"https://doi.org/10.25130/tjds.11.2.18","url":null,"abstract":"Background: All ceramic CAD/CAM materials require surface treatment protocols varying from one type to another according to their chemical composition, including hydrofluoric acid etching, sandblasting, silica coating, laser etching, and non-thermal plasma treatment. This review's objective to analyze and bring up-to-date data about the surface treatment of ceramics.Data: The review just searched electronic publications of papers. Websites \"Google Scholar\" and \"PubMed\" were utilized as sources for performing data searches using the following keywords: Surface modification, plasma surface treatment, indirect restoration, ceramics The original papers and clinical investigations that were published between the years 2006 to March 2023 that were the most relevant to the subject at hand were chosen.Conclusion: A variety of surface treatment methods have been proposed to enhance the bonding of restorative materials to resin cement and provide micromechanical retention by altering the restoration's surface mechanically by increasing the degree of roughness or physico/chemically by activating the surface. Hydrophloric acid etch is a golden standard for the surface treatment of feldspathic and lithium disilicate ceramics, the APC concept for zirconia, and hydrofluoric acid or sandblast surface treatment for resin nano-ceramic. A new approach used for surface treatment is plasma treatment, which is really promising in dentistry.","PeriodicalId":512116,"journal":{"name":"Tikrit Journal for Dental Sciences","volume":"2 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139439710","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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