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Effect of Three different fluoride Varnishes on Streptococcus Mutans and Lactobacillus Biofilm: An Vitro Study 三种不同含氟清漆对变形链球菌和乳酸菌生物膜影响的体外研究
Pub Date : 2022-09-01 DOI: 10.21608/dsu.2022.90121.1076
Moaaz Abdelhameed, Sahar Z Elazab, Wael Abdelkhalek, Ghada A. Elbaz
Introduction: Fluoride varnish is quickly and easily applied without the need for bulky mouth trays or suctioning of saliva. This is especially helpful for infants and toddlers. Aim: The aim of this study was to evaluate and compare the effect of three different fluoride varnishes (Durashield, Flour Protector and Bifluoride 10) on streptococcus mutans and lactobacillus count (in vitro study). Materials and methods : Total of 144 acrylic discs were divided into two main equal groups of 72 discs in each (group A: for examination of Streptococcus mutans and group B: for examination of Lactobacillus ); each group was further subdivided into four equal subgroups based on the type of varnish applied to the disc surface (A1, B1: Durashield; A2, B2: Fl protector; A3, B3: Biflouride; A4, B4: untreated discs served as control). Saliva collected from single volunteer was poured into tubes until the discs were completely immersed and incubated for 24h, 48h and 5 days. Six discs from each subgroup were taken out from tubes every time and sonicated in saline. Suspensions were been plated on selective media for Streptococcus mutans and Lactobacillus . The numbers of colony-forming units (CFU/mL) on suitably diluted plates were been determined. Results : For all tested subgroups, the lowest amount bacterial count of Streptococcus mutans and Lactobacillus was observed during the first 24 h, followed by a significant increase over the following 4 days. Biflouride subgroups had the lowest values of viable Streptocoocusmutans and Lactobacillus counts during all test periods. In comparison Durashield with Flour protector subgroup difference of viable counts of streptocoocusmutans and lactobacillus was observed but statistically non-significant. Conclusions : Biflouridevarnish exhibited the greatest antibacterial effect ( Streptococcus mutans and Lactobacillus ) compared to Durashield and flour protector. Fluor protector varnish showed the same inhibitory effect of Durashildvarnish despite Flour protector had lower fluoride concentration than Durashield.
氟化物清漆是快速和容易的应用,而不需要庞大的口腔托盘或唾液的吸引。这对婴幼儿尤其有帮助。目的:本研究的目的是评估和比较三种不同的氟化物清漆(Durashield, Flour Protector和bi氟化物10)对变形链球菌和乳酸菌数量的影响(体外研究)。材料与方法:144片丙烯酸片分为两组,每组72片(A组用于检测变形链球菌,B组用于检测乳酸菌);每组根据应用于椎间盘表面的清漆类型进一步细分为四个相等的亚组(A1, B1: durasshield;A2、B2: Fl保护器;A3、B3:二氟化物;A4, B4:未处理的椎间盘作为对照)。将单个志愿者的唾液倒入管中,直至培养皿完全浸没,孵育24小时、48小时和5天。每个亚组每次从试管中取出6个椎间盘,在生理盐水中超声。将悬浮液在变形链球菌和乳酸菌的选择性培养基上接种。在适当稀释的平板上测定菌落形成单位数(CFU/mL)。结果:在所有测试亚组中,变形链球菌和乳酸杆菌的细菌计数在前24小时内最低,随后在接下来的4天内显著增加。在所有试验期间,bi氟化物亚组的活链球菌和乳杆菌数量最低。durasshield亚组与Flour protector亚组比较,链球菌和乳酸菌活菌数差异无统计学意义。结论:与durasshield和面粉保护剂相比,双氟蝶油对变形链球菌和乳酸菌的抑菌效果最好。面粉保护剂的氟浓度低于Durashield,但氟保护剂的抑制效果与Durashield漆相同。
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引用次数: 0
Efficacy of Piezoelectric Surgery on Postoperative Complications after Surgical Extraction of Impacted Mandibular Third Molar 压电手术对下颌阻生第三磨牙拔除术后并发症的影响
Pub Date : 2022-09-01 DOI: 10.21608/dsu.2022.112411.1092
Eman Eldemardash, Eman Al Sharawy, M. Hamed
Introduction: Piezoelectric surgery is an osteotomy technique that can help to minimize tissue trauma and its complications. It is a safe technique since it only works on the mineralized tissues, leaving the surrounding tissues’ perfusion and innervation unaffected. It reduces tissue thermal damage and prevents osteonecrosis. Aim: The aim of study was to evaluate the effect of using Piezosurgery on pain, swelling, and trismus after surgical extraction of impacted mandibular third molar. Patients and methods: This study was conducted on healthy patients classified as ASA class I patients. Fifteen patients with bilateral, symmetrical, mandibular impacted third molars that needed surgical extraction were selected and divided randomly into two equal groups 15 teeth for each group. The same patient is considered as control and study group. Group A: Underwent surgical extraction of impacted mandibular third molar with a conventional rotary device. Group B: Underwent surgical extraction of impacted mandibular third molar with piezoelectric device. Pain, edema, and trismus were evaluated after 2 and 7 days postoperatively, and the total number of analgesic tablets taken by the patient till day 7 was counted. Results: The results showed there was significantly less pain, edema, and trismus with piezosurgery compared to rotary instruments after 2 days and 7 days postoperatively. The total number of analgesics taken by the patients was significantly less with piezosurgery compared to conventional group. Conclusion: The use of piezoelectric surgery for bone removal during the extraction of impacted mandibular third molar reduces postoperative pain, edema, and trismus.
简介:压电手术是一种截骨技术,可以帮助减少组织损伤及其并发症。这是一种安全的技术,因为它只作用于矿化组织,而不影响周围组织的灌注和神经支配。减少组织热损伤,防止骨坏死。目的:评价压电手术对下颌阻生第三磨牙拔除后疼痛、肿胀和牙关紧闭的影响。患者和方法:本研究以ASA I类健康患者为研究对象。选择需行手术拔牙的双侧对称下颌阻生第三磨牙患者15例,随机分为两组,每组15颗。同一患者被认为是对照组和研究组。A组:采用常规旋转装置手术拔除下颌阻生第三磨牙。B组:采用压电装置拔除下颌阻生第三磨牙。术后第2天、第7天评估患者疼痛、水肿、牙关情况,统计患者至第7天的镇痛片总用量。结果:结果显示,与旋转器械相比,在术后2天和7天,压电手术明显减轻了疼痛、水肿和咬合。与常规组相比,骨性手术组患者使用的镇痛药总数明显减少。结论:在下颌阻生第三磨牙拔除过程中,采用压电手术进行除骨可减少术后疼痛、水肿和牙关紧闭。
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引用次数: 0
Fabrication and Characterization of Polycaprolactone/Zein and Polycaprolactone/Zein/Bioglass Composite Scaffolds for BoneTissue Engineering 骨组织工程用聚己内酯/玉米蛋白及聚己内酯/玉米蛋白/生物玻璃复合支架的制备与表征
Pub Date : 2022-09-01 DOI: 10.21608/dsu.2022.102953.1088
E. Mohamady, D. Bayoumi, sabry El Korashy, M. El‐Shahid, T. Moussa
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引用次数: 0
Assessment of Biological Properties of Zirconia Reinforced Glass Ionomer versus Glass Ionomer with Glass Hybrid Technology in Class II Cavities. Randomized Controlled Clinical Trial II类腔中氧化锆增强玻璃离聚体与玻璃杂化技术玻璃离聚体生物性能的比较。随机对照临床试验
Pub Date : 2022-09-01 DOI: 10.21608/dsu.2022.113472.1095
Basma Mohamed, rehab elsafy, A. Abo elezz, O. Fahmy
Introduction : Glass ionomer cement (GIC) has numerous advantages over other restorative materials. In particular, self-adhesion to tooth structure in addition to its fluoride release that makes it suitable for treatment of majority of high caries risk cases. However, clinical usage of GIC is still limited due to their sensitivity to initial desiccation, low resistance to abrasion and low esthetic properties explaining why these materials are not widely used for permanent fillings. Materials and Methods: Class II occlusal slot cavities were prepared in the first permanent molar of sixty patients and restored randomly by two restorations, either; EQUIA ® Forte Fil (Glass ionomer with glass hybrid technology) or Zirconomer ® Improved (Zirconia-reinforced glass ionomer). Restorations were evaluated according to FDI criteria in terms of biological properties at baseline, after six months and one year. Results: Chi-square and Mann-Whitney tests revealed that there was no statistically significant difference between both materials with 100% success in all restorations in both groups at the base line. At six months follow up time, 92% of the EQUIA ® Forte Fil group and 68% of the Zirconomer ® Improved group were clinically successful. Meanwhile, at 12 months follow up time, 88% of the EQUIA ® Forte Fil group and 48% of the Zirconomer ® Improved group were clinically successful with significant difference between them at both six and 12 months. Conclusions: Glass ionomer with glass hybrid technology exhibited better clinical performance in terms of biological properties than zirconia-reinforced glass ionomer in class II slot cavities after six months and one year. recurrent caries, which affects the restoration’s longevity (1) . The clinical use of resin composite is considered to be technique-sensitive where filling’s layer should not exceed 2 mm in isolated operating field. This is difficult to achieve in non-cooperative patients with high caries risk or when the rubber dam is impossible to install. Furthermore, resin composite is not cariostatic material, and bonding to dentin can be unpredictable with a significant variation in the bonding efficiency (2) .
介绍:玻璃离子水门合剂(GIC)与其他修复材料相比具有许多优点。特别是,除了释放氟化物外,它还能与牙齿结构自粘,这使它适合治疗大多数高龋病风险病例。然而,GIC的临床应用仍然受到限制,因为它们对初始干燥敏感,耐磨损性低,美观性低,这解释了为什么这些材料没有广泛用于永久性填充物。材料与方法:在60例患者的第一恒磨牙上制备ⅱ类牙合槽腔,随机采用两种修复方式进行修复;EQUIA®Forte Fil(玻璃混合技术玻璃离子聚合物)或Zirconomer®Improved(氧化锆增强玻璃离子聚合物)。在六个月和一年后,根据外国直接投资标准在基线时对修复进行生物特性评估。结果:卡方检验和Mann-Whitney检验显示,两种材料在基线上100%成功修复,两组间无统计学差异。在6个月的随访时间,92%的EQUIA®Forte Fil组和68%的Zirconomer®Improved组临床成功。同时,在12个月的随访时间中,88%的EQUIA®Forte Fil组和48%的Zirconomer®Improved组临床成功,在6个月和12个月时两者之间存在显著差异。结论:采用玻璃杂化技术的玻璃离聚体在6个月和1年后在II类槽腔中表现出比氧化锆增强玻璃离聚体更好的生物学性能。龋齿复发,影响修复体的寿命(1)。树脂复合材料的临床应用被认为是技术敏感的,在孤立的手术视野中填充层不应超过2mm。这在不合作的高龋风险患者或当橡胶坝不可能安装时很难实现。此外,树脂复合材料不是防蛀材料,与牙本质的结合是不可预测的,结合效率会有很大的变化(2)。
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引用次数: 0
Effect of Two Remineralizing Analogues on Treatment of Post Orthodontic Enamel White Spot Lesions Using spectrophotometer: An in Vivo Study 两种再矿化类似物对分光光度计治疗正畸牙釉质白斑病变的体内研究
Pub Date : 2022-09-01 DOI: 10.21608/dsu.2022.119046.1102
Dina Ali, A. Abo elezz, Mohamed Nadim, O. Fahmy
Introduction: Patients seeking orthodontic treatment are mainly targeting improving their esthetic, but they are faced with an unfavorable side effect of fixed orthodontic treatment, which is enamel demineralization manifested as white spot lesions (WSLs). As a result, it’s critical to alter caries risk factors and focus on therapeutic options that emphasize remineralization of lesions. Aim : The purpose of this study was to assess the clinical effect of self-assembling peptides and amorphous calcium phosphate varnish on the treatment of post orthodontic enamel WSLs . Materials and methods . In this prospective single-blinded randomized clinical investigation, a total of 40 patients’ teeth (10 per group) were enrolled in four groups; first the control group, two remineralizing analogue groups; Self-assembling peptide P11-4 group (Curodont ™ Repair /Regenamel®), and Amorphous Calcium Phosphate varnish (Enamel Pro® Varnish 5% Sodium Fluoride Premier Dental). The combination of the two analogues were used to form the fourth group; through combining Selfassembling peptide containing a considerable quantity of calcium phosphate and fluoride ions. WSLs were evaluated using Vita Easy® Shade spectrophotometer (Vita Zahnfabrik, Germany) to calculate (∆E) of shade changes, immediately after de-bonding of the orthodontic brackets. Follow ups were done after one, three, and six months. Results: WSLs recovery was significantly better in the combination group followed by the s combine Self-assembling peptide group, than the control group, which had the lowest remineralization levels. Conclusion: Combining organic and inorganic remineralizing analogues showing the highest remineralizing potential reflected by the increase in Vita Easy ® Shade readings. which manifests as WSLs. As a result, it’s critical to alter caries risk factors and focus on therapeutic options that emphasis remineralization of lesions. Such approaches are the topical uses of different re-mineralizing agents alone or combined. Furthermore, masking lesions with bleaching, micro-abrasion, or the camouflage effect provided by resin infiltration would improve the aesthetic aspect of teeth (1) . Fluoride-based caries prevention and management strategies P11-4,
导语:寻求正畸治疗的患者主要是为了改善美观,但他们面临着固定正畸治疗的不良副作用,即牙釉质脱矿,表现为白斑病变(WSLs)。因此,改变龋齿的危险因素和专注于强调病变再矿化的治疗选择是至关重要的。目的:探讨自组装肽和无定形磷酸钙清漆治疗正畸后牙釉质WSLs的临床效果。材料和方法。在这项前瞻性单盲随机临床研究中,共有40名患者的牙齿(每组10名)被分为四组;首先是对照组,两个再矿化类似物组;自组装肽P11-4基团(curodon™Repair /Regenamel®)和无定形磷酸钙清漆(搪瓷Pro®清漆5%氟化钠Premier Dental)。将两种类似物组合成第四组;通过结合含有大量磷酸钙和氟离子的自组装肽。使用Vita Easy®色度分光光度计(Vita Zahnfabrik,德国)评估WSLs,计算正畸托槽脱粘后色度变化(∆E)。随访分别在1个月、3个月和6个月后进行。结果:联合用药组再加s联合自组装肽组WSLs恢复明显好于再矿化水平最低的对照组。结论:结合有机和无机再矿化类似物显示出最高的再矿化潜力,反映在Vita Easy®Shade读数的增加。这表现为wsdl。因此,改变龋齿的危险因素和专注于强调病变再矿化的治疗选择是至关重要的。这种方法是局部单独或联合使用不同的再矿化剂。此外,通过漂白、微磨损或树脂渗透提供的伪装效果来掩盖病变将改善牙齿的美学方面(1)。氟基龋齿预防和管理战略P11-4;
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引用次数: 0
Effect of Three Treatment Modalities for White Spot Enamel Lesions on Enamel Surface Roughness and Micro-Hardness 三种治疗方式对白斑牙釉质表面粗糙度和显微硬度的影响
Pub Date : 2022-09-01 DOI: 10.21608/dsu.2022.101372.1086
Hadeer Mashaal El Sayed, A. Abo elezz, O. Fahmy
Introduction: White spot lesions (WSLs) are early signs of enamel demineralization, which may or may not lead to the development of caries, this indicates that there is a mineral loss of subsurface area beneath an intact enamel surface. Aim: This is a vitro study evaluated the effect of three treatment modalities for white spot enamel lesion namely; resin infiltration, remineralization and micro-abrasion on enamel surface roughness and micro-hardness. Materials and methods: Artificial white spot lesions were produced in enamel surface from a sixty intact extracted human permanent premolars were selected for the study. The selected teeth were divided into three groups according to methods of treatment of white spot lesion (20 teeth each); resin infiltration, micro-abrasion and remineralization. For both surface roughness and micro-hardness tests, the assessment was done three times; prior to WSLs productions (baseline) after WSLs production (pretreatment phase) and after treatment (post treatment phase). The different between base line and post treatment phase values will be calculated and represented as the change occurring (value). Statistical analysis was done using one way Anova. Results: The results of the current study showed that after treatment of WSLs the surface roughness improved significantly in all tested groups but there was no statistically significant difference between all treated groups. Also, the results of the current study showed that after treatment of the WSLs the microhardness increased in all groups but there was statistically significant difference between Icon ® treated group compared to both Opalustre ® and Tooth Mousse ® treated groups. Conculsions: The three tested modalities for the treatment of white spot lesions could improve the surface roughness and the micro-hardness of the treated enamel but the Opalustre ® and Tooth Mousse™ were equally effective in improving the microhardness ® and more effective than Icon. demineralization, which may or may not lead to the development of caries, this indicates that there is a mineral loss of subsurface area beneath an intact enamel surface. This loss of mineralized layer creates porosities that change the refractive index of usually translucent enamel, so the white spot lesions can appear as a milky white opacity when located on smooth surfaces and detected by the naked eye (1) .
白斑病变(WSLs)是牙釉质脱矿的早期迹象,它可能导致也可能不会导致龋齿的发展,这表明在完整的牙釉质表面下存在地下区域的矿物质损失。目的:评价三种治疗方法对牙釉质白斑病变的效果;树脂渗透、再矿化和微磨损对牙釉质表面粗糙度和显微硬度的影响。材料和方法:选择60颗完整的人恒磨牙,在牙釉质表面形成人工白斑。选择的牙根据治疗白斑病变的方法分为3组(每组20颗牙);树脂渗透、微磨损和再矿化。对于表面粗糙度和显微硬度测试,进行了三次评估;生产wssl之前(基线)、生产wssl之后(预处理阶段)和处理之后(处理后阶段)。基线和处理后相位值之间的差异将被计算并表示为发生的变化(值)。统计分析采用单因素方差分析。结果:本研究结果显示,经WSLs处理后,各被试组表面粗糙度均有明显改善,但各处理组间差异无统计学意义。同时,本研究结果显示,处理后的WSLs,所有组的显微硬度均有所增加,但Icon®处理组与Opalustre®和Tooth Mousse®处理组相比,有统计学差异。结论:三种治疗白斑病变的方法均可改善釉质表面粗糙度和显微硬度,但Opalustre®和Tooth Mousse™在改善显微硬度方面效果相同,且优于Icon。脱矿,可能会也可能不会导致龋齿的发展,这表明在完整的牙釉质表面下有矿物质的流失。矿化层的缺失造成了孔隙,改变了通常半透明的牙釉质的折射率,因此当白斑病变位于光滑表面并被肉眼检测到时,会出现乳白色的不透明(1)。
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引用次数: 1
Effect of Two Remineralizing Analogues on Treatment of Post Orthodontic Enamel White Spot Lesions Using Laser Fluorescence-Based Caries Detector (An in Vivo Study) 两种再矿化类似物对激光荧光龋病探测器治疗正畸牙釉质白斑病变的体内研究
Pub Date : 2022-09-01 DOI: 10.21608/dsu.2022.121080.1106
Dina Ali, A. Abo-Elezz, Mohamed Nadim, O. Fahmy
Introduction: Aesthetic dentistry has developed in the recent decades. Orthodontic treatment has become one of the more popular ways for alignment of crowded teeth. However, when braces are removed, white spot lesions (WSLs) may have a detrimental impact on the patient’s aesthetics and pleasure. Aim: this research aimed to evaluate the clinical effect of Self assembling peptides and Amorphous calcium phosphate varnish on the treatment of post orthodontic enamel WSLs. Materials and methods: A total of 40 patients teeth were enrolled in this prospective single-blinded randomized clinical study categorized into four groups (10 per group); Control group , Self assembling peptide P11-4 group (Curodont ™ Repair /Regenamel®), Amorphous Calcium Phosphate varnish group (Enamel Pro® Varnish 5% Sodium Fluoride Premier Dental) and combination group in which the two analogues were combined with each other. Enamel white spot lesions were evaluated quantitatively using Diagnodent® (KaVo Dental Corporation, USA). Results: A quantitative increase in remineralization of post orthodontic WSLs in all the groups and over time intervals. However, the WSLs recovery was significantly better in the combination group followed by the self-assembling peptide group, than control group which showed the least values of remineralization. Conclusion: Combining self-assembling peptideP11-4 with other inorganic remineralizing analogues provides additional benefits of accelerating and enhancing the remineralization process, allowing for significantly faster and improved regenerative repair for post orthodontic WSLs. have a detrimental effect on the patient’s aesthetics and satisfaction. White Spot Lesions should be treated in a multifaceted manner. In fixed orthodontic patients, effective oral hygiene is the cornerstone of preventative interventions, followed by secondary prevention and reversing lesions with remineralizing agents such as topical fluoride, casein phosphor peptides-amorphous
美容牙科在近几十年来得到了发展。正畸治疗已成为一种比较流行的方法来对准拥挤的牙齿。然而,当牙套被移除时,白斑病变(WSLs)可能会对患者的审美和愉悦产生不利影响。目的:评价自组装肽与无定形磷酸钙清漆治疗正畸后牙釉质WSLs的临床效果。材料和方法:本前瞻性单盲随机临床研究共纳入40例患者的牙齿,分为四组(每组10例);对照组,自组装肽P11-4组(curodon™Repair /Regenamel®),无定形磷酸钙清漆组(搪瓷Pro®清漆5%氟化钠Premier Dental)和两种类似物相互组合的组合组。牙釉质白斑病变定量评估使用诊断®(KaVo牙科公司,美国)。结果:正畸后WSLs再矿化在所有组和随时间间隔的定量增加。然而,联合组和自组装肽组的WSLs恢复明显好于对照组,再矿化值最小。结论:将自组装肽dep11 -4与其他无机再矿化类似物结合,可以加速和增强再矿化过程,从而显著加快和改善正畸后wsl的再生修复。对病人的审美和满意度有不利影响。白斑病变应从多方面进行治疗。在固定正畸患者中,有效的口腔卫生是预防性干预的基石,其次是二级预防和再矿化剂逆转病变,如局部氟化物,酪蛋白磷肽-无定形
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引用次数: 0
Comparative Study on the Effect of Diode Laser Application on the Longevity of Fluoride Release from Three Different Fluoride Varnishes: An in vitro Study 二极管激光应用对三种不同氟化物清漆氟释放寿命影响的体外比较研究
Pub Date : 2022-03-01 DOI: 10.21608/dsu.2022.102675.1087
Yassmin Othman, Yousra Helmy, M. Farag
Introduction: The use of fluoride for caries prevention has been known for many decades, as it has the ability to incorporate into the crystalline lattice of dental hard tissues, resulting in a tissue less soluble in acidic environment. Other alternatives for preventing dental caries are metal ions; Nano Silver Fluoride (NSF). The laser–fluoridation combination was introduced as a technique that combines the application of fluoride varnish along and laser. Aim: This study aimed to evaluate and compare the effect of diode laser when irradiated at diffirent powers and when used either before or after fluoride varnish application on the longevity of fluoride release using ion selective electrode, from three different fluoride varnishes (in vitro study): Enamel pro varnish, Clinpro XT varnish and Nano Silver Fluoride. Material and Methods: 72 samples were collected, and then divided into 3 groups: Group I: Enamel pro, Group II: Clinpro XT and GroupIII: Nano Silver Fluoride (NSF). Each group was subdivided according to diode laser application into 3 subgroups, then samples were placed individually in a test tube containing artificial saliva. Fluoride release was measured by ion selective electrode for fluoride. Results: Clinpro XT had the highest amount of fluoride release followed by Enamel pro. Meanwhile, NSF didn`t release a significant amount of fluoride. There was a statistically significant difference in fluoride release when diode laser was irradiated at 5 Watt, after Enamel pro and Clinpro XT application. However, no significant effect for diode laser irradiation on NSF was found when used either before or after NSF treatment. Conclusion: Enamel pro and Clinpro XT can be used efficiently as fluoride varnishes. Diode laser irradiation at 5 Watt after fluoride varnish application has a profound effect on fluoride release.
导读:氟化物用于预防龋齿已经有几十年了,因为它有能力融入牙齿硬组织的晶格,导致组织在酸性环境中不易溶解。其他预防龋齿的替代品是金属离子;纳米氟化银(NSF)。介绍了激光加氟组合技术,是一种将激光加氟和激光加氟相结合的技术。目的:采用离子选择电极法,以搪瓷、克林普XT和纳米氟化银三种不同的氟化清漆(体外研究)为研究对象,评价和比较二极管激光在不同功率照射下以及涂氟化清漆前后对氟释放寿命的影响。材料与方法:收集72份样品,将其分为3组:I组:搪瓷pro, II组:克林普罗XT, piii组:纳米氟化银(NSF)。每组按二极管激光应用情况再分为3个亚组,分别置于人工唾液试管中。氟离子选择电极法测定氟化物释放量。结果:氟释放量最大的是Clinpro XT,其次是搪瓷pro。同时,NSF并没有释放大量的氟化物。应用搪瓷pro和Clinpro XT后,5瓦二极管激光照射时氟释放量有统计学意义。然而,无论是在NSF治疗前还是治疗后,均未发现二极管激光照射对NSF的显著影响。结论:牙釉质pro和Clinpro XT可作为氟化物清漆有效使用。氟化物清漆后5瓦的二极管激光照射对氟化物的释放有深远的影响。
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引用次数: 0
Correlation between maxillary sinus volume and different facial patterns using Cone Beam Computed Tomography in adults 成人上颌窦容积与不同面部形态的锥形束ct相关性研究
Pub Date : 2022-03-01 DOI: 10.21608/dsu.2022.95693.1083
N. Abdelhamid, Mohamed Nadim, A. ElKadi
Introduction: The maxillary sinus both affects and is affected by orthodontic treatment thus knowledge about it is of great value. With the emergence of Cone-beam computed tomography (CBCT) studying the maxillary sinus became more accurate. Aim: to find out if there is a correlation between the maxillary sinus volume and facial pattern in adults using cone beam computed tomography. Methods: Cone-beam computed tomography (CBCT) scans of 36 adults were obtained. They were divided equally into three groups: Normal facial pattern, hyper-divergent facial pattern and hypo-divergent facial pattern. The volume of the maxillary sinus on both the right and left sides were measured in each group using OnDemand3D software program. Results: The results of this study were that there is no significance difference between the maxillary sinus volume in the different groups of facial pattern. There is no significance between the volume of the maxillary sinus on the right and left side. Conclusions: There is no correlation between the maxillary sinus volume and the vertical growth pattern. The right and left maxillary sinus are corresponding to each other in volume. INTRODUCTION Evaluation of the maxillary sinus during orthodontic diagnosis is crucial since it may affect the orthodontist’s treatment plan. Precautions should be taken so that the line of treatment chosen not encroach on the integrity of the maxillary sinus(1). Orthodontic treatment plan is affected by the size and position of the maxillary sinus. Likewise, the maxillary sinus may be affected by different malocclusions either dental or skeletal, anteroposterior or vertical in terms of size and position(2,3). With the emergence of cone beam computed tomography (CBCT) and its advantages in the world of radiography appreciated, orthodontists are using it more and more frequently. Studying the maxillary sinus becomes more accurate and with a 3D approach and the volume of the sinus could be evaluated(4). Several researches were made to pinpoint whether there is a relation between maxillary sinus volume and malocclusion. Some studies show that there was a correlation between the maxillary sinus volume and vertical malocclusion however there were other studies that contradicted that findings(5-8). DOI: 10.21608/dsu.2022.95693.1083 Manuscript ID: DSU-2110-1083
上颌窦既影响正畸治疗,又受正畸治疗的影响,因此了解上颌窦具有重要的价值。随着锥束计算机断层扫描(CBCT)的出现,对上颌窦的研究变得更加准确。目的:探讨成人上颌窦容积与面部形态的相关性。方法:对36例成人进行锥形束计算机断层扫描(CBCT)。他们被平均分为三组:正常面部模式、超发散面部模式和低发散面部模式。采用OnDemand3D软件分别测量两组患者左右两侧上颌窦体积。结果:上颌窦容积在不同颜面型组间无显著性差异。左右两侧上颌窦的容积差异无统计学意义。结论:上颌窦体积与垂直生长模式无相关性。左右上颌窦在体积上相互对应。在正畸诊断中,上颌窦的评估是至关重要的,因为它可能会影响正畸医生的治疗计划。应采取预防措施,使所选择的治疗路线不侵犯上颌窦的完整性(1)。正畸治疗方案受上颌窦大小和位置的影响。同样,上颌窦在大小和位置上也可能受到不同的牙错或骨错、前后错或垂直错的影响(2,3)。随着锥形束计算机断层扫描技术(CBCT)的出现及其在放射学领域的优势被人们所认识,正畸医师越来越频繁地使用它。对上颌窦的研究变得更加准确,并且通过3D入路可以评估窦的体积(4)。为了明确上颌窦体积与错颌合之间是否存在关系,我们进行了一些研究。一些研究表明上颌窦体积与垂直错颌之间存在相关性,但也有其他研究与此结果相矛盾(5-8)。DOI: 10.21608/dsu.2022.95693.1083手稿ID: DSU-2110-1083
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引用次数: 1
Effect of Emdogain and Diode laser Irradiation ‎on ‎Periodontal Healing of Replanted Teeth after ‎Extended Extra ‎‎- Oral Dry time ( An Experimental ‎Study).‎ Emdogain和二极管激光照射对延长口腔干燥时间后再植牙牙周愈合的影响(一项实验研究)
Pub Date : 2022-03-01 DOI: 10.21608/dsu.2022.40624.1043
Mahmoud Mohamed, Manar sleim, Gehan El Desouky, M. Farag
Dental injuries usually affect one or two of the anterior teeth, and especially the maxillary central incisors. The aim of the experimental study was to radiographically evaluate the effect of both Emdogain with and without high power Diode laser irradiation Emdogain with and without high power Diode laser irradiation on replanted teeth of rats teeth of rats after extended extra oral dry time. Material and methods: The study was conducted on extracted maxillary incisors of 42 adult male Albino rats weighing 160–250 g. The rats were assigned to three groups 14 rats in each, then replanted after 75 minutes as follow ; Group I (Control group) no treatment for the root surface was performed on the extracted upper right central incisors and alveolar wound before their replantation. Group II (EMD) Emdogain was applied on root surface and alveolar wound. Group III Diode laser then Emdogain were applied on root surface and alveolar wound. Replantation was done then splinting of teeth. Half of each group was euthanized after 4 weeks, while the other half after 8 weeks. The jaws were dissected out for radiographic examination using standardized periapical technique. Results: The radiographic analysis showed that the alveolar crest bone density in group III was the highest and less in the group II, while the least density was in the group I. Conclusion : Application of EMD to the root surface has limited inductive effects on bone while using EMD with Diode laser leads to better PDL healing and formation of bone in comparison to using EMD only or without treatment of root surface.
牙齿损伤通常影响一到两颗前牙,尤其是上颌中门牙。本实验研究的目的是放射学评价Emdogain加和不加大功率二极管激光照射对大鼠牙移植后延长口腔外干时间的影响。材料与方法:选取42只体重160 ~ 250 g的成年雄性白化大鼠的上颌切牙进行研究。将大鼠分为三组,每组14只,75分钟后再移植;第一组(对照组)拔除的右上中切牙及牙槽面创面在再植前不作根面处理。EMD组:Emdogain应用于牙根面和牙槽面创面。第三组用二极管激光加Emdogain治疗牙根面和牙槽面创面。再植牙,然后夹板。每组一半在4周后安乐死,另一半在8周后安乐死。采用标准化根尖周技术将颌骨解剖出来进行x线检查。结果:x线分析显示,III组牙槽嵴骨密度最高,II组牙槽嵴骨密度最低,i组牙槽嵴骨密度最低。结论:EMD应用于牙根表面对骨的诱导作用有限,而与二极管激光相比,仅使用或不使用EMD治疗牙根表面,EMD可使PDL愈合和骨形成更好。
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引用次数: 0
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Dental Science Updates
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