Alexandria Dental Journal最新文献_第10页

THE EFFECT OF BIOCOMPOSITE GRAFTING MATERIAL ON CALVARIAL BONE REGENERATION (AN EXPERIMENTAL STUDY) 生物复合移植材料对腓骨再生的影响（实验研究）

Alexandria Dental Journal Pub Date : 2023-12-01 DOI: 10.21608/adjalexu.2022.148596.1295

Muoaaid Alabd althiab, Mahitab Soliman, Lydia F. Melek, Hagar Abdel Fattah

{"title":"THE EFFECT OF BIOCOMPOSITE GRAFTING MATERIAL ON CALVARIAL BONE REGENERATION (AN EXPERIMENTAL STUDY)","authors":"Muoaaid Alabd althiab, Mahitab Soliman, Lydia F. Melek, Hagar Abdel Fattah","doi":"10.21608/adjalexu.2022.148596.1295","DOIUrl":"https://doi.org/10.21608/adjalexu.2022.148596.1295","url":null,"abstract":"INTRODUCTION: regenerating bone deficiencies produced by trauma or periodontal disorder is a major objective. The surgeon constantly seeks to collect enough bone to finish his tasks as well as to replace the amount of bone that has been lost. In oral surgery, bone grafting is a method frequently employed to make up for lost hard tissue. AIM OF THE STUDY: comparing the bone healing rate of critical defect sizes in the calvaria rabbit with and without using a bio-composite material, both histopathologically and histomorphometrically. MATERIALS AND METHODS: Two bone deficiencies were prepared on the Rabbits’ calvaria of. The right-handed defect was the control and the left-handed defect was the study group in all of the rabbits. The control had the defect left without anything, while the study group was received biocomposite material (bone collagen, bone sulfated glycosaminoglycans sulphated glucosamine glycans (sGAG) and hydroxyapatite in natural form). At 2, 4, 6 weeks intervals, the animals were euthanized. RESULTS: The histopathological and histomorphometric results revealed a new bone formation in both groups, the study group showed enhanced quality and quantity. CONCLUSION: The current histological and histomorphological investigation of rabbit cranial bone deficiencies after treating with the test resorbable alloplastic graft showed an excellent biocompatibility of both the biomaterial and the distinct newly formed bone after a 6 weeks period of healing.","PeriodicalId":7723,"journal":{"name":"Alexandria Dental Journal","volume":"56 3‐4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138621804","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}

引用次数: 0

REMINERALIZATION OF SELF-ASSEMBLING PEPTIDE P11-4 AND CASEIN PHOSPHOPEPTIDE-AMORPHOUS CALCIUM PHOSPHATE FLUORIDE ON CARIES-LIKE LESIONS IN PRIMARY TEETH (IN-VITRO STUDY) 自组装肽 p11-4 和酪蛋白磷酸肽-无定形磷酸钙氟化物对乳牙龋齿样病变的再矿化作用（体外研究）

Alexandria Dental Journal Pub Date : 2023-12-01 DOI: 10.21608/adjalexu.2023.246496.1432

Peter Habashy, K. Dowidar, hager Abdel Fattah, Dina Sharaf

{"title":"REMINERALIZATION OF SELF-ASSEMBLING PEPTIDE P11-4 AND CASEIN PHOSPHOPEPTIDE-AMORPHOUS CALCIUM PHOSPHATE FLUORIDE ON CARIES-LIKE LESIONS IN PRIMARY TEETH (IN-VITRO STUDY)","authors":"Peter Habashy, K. Dowidar, hager Abdel Fattah, Dina Sharaf","doi":"10.21608/adjalexu.2023.246496.1432","DOIUrl":"https://doi.org/10.21608/adjalexu.2023.246496.1432","url":null,"abstract":"INTRODUCTION: The early stages of dental caries involve enamel demineralization which can be reversed. Attempts have been made to develop new materials to remineralize enamel. OBJECTIVES: To assess remineralizing effect of Self-assembling Peptide P11-4 and Casein Phosphopeptide-Amorphous Calcium Phosphate Fluoride (CPP-ACPF) in comparison to Sodium Fluoride varnish on early carious lesions in primary teeth. MATERIALS AND METHODS: Thirty-six sound-extracted primary anterior teeth were used. A 4x4mm window was made in the middle of the labial surface of each tooth. Teeth were subjected to artificial demineralization and then randomly allocated into 3 groups: Group I(5%NaF varnish), Group II(CPP-ACPF varnish) and Group III(P11-4). Teeth were sectioned longitudinally into two halves. One half was treated by the remineralizing agent, and the other was left untreated as a negative control. Samples were subjected to elemental analysis using Energy Dispersive X-ray spectrometer(EDX) where the Calcium and phosphorus contents were estimated and the surface topography was assessed by Scanning-Electron-Microscope(SEM). Comparison of Calcium/Phosphorus ratio was done using One Way ANOVA and the differences in percent change were analyzed using the Kruskal Wallis test. RESULTS: There was a significant difference in the mineral content within each group before and after treatment indicating remineralization in all groups. The percent increase in Ca/P ratio after treatment was higher in P11-4 group with no significant difference between groups. Surface topography showed improvement in all groups with better surface quality in self-assembling peptide P11-4 group than other groups. CONCLUSION: The CPP-ACPF varnish, Self-assembling peptide P11-4 and 5% Sodium fluoride varnish are effective in restoring the mineral content and improving surface morphology of early carious lesions in primary teeth.","PeriodicalId":7723,"journal":{"name":"Alexandria Dental Journal","volume":"65 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138626023","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}

引用次数: 0

ADAPTATION AND PENETRATION OF THREE DIFFERENT ROOT CANAL SEALERS WITH SINGLE CONE OBTURATION TECHNIQUE: A SCANNING ELECTRON MICROSCOPE STUDY (AN IN VITRO STUDY) 三种不同根管封闭剂与单锥封堵技术的适应性和渗透性：扫描电子显微镜研究（体外研究）

Alexandria Dental Journal Pub Date : 2023-12-01 DOI: 10.21608/adjalexu.2022.151014.1298

Ahmad Abdeen, Raef A. Sherif, Mahmoud Aboelseoud

{"title":"ADAPTATION AND PENETRATION OF THREE DIFFERENT ROOT CANAL SEALERS WITH SINGLE CONE OBTURATION TECHNIQUE: A SCANNING ELECTRON MICROSCOPE STUDY (AN IN VITRO STUDY)","authors":"Ahmad Abdeen, Raef A. Sherif, Mahmoud Aboelseoud","doi":"10.21608/adjalexu.2022.151014.1298","DOIUrl":"https://doi.org/10.21608/adjalexu.2022.151014.1298","url":null,"abstract":"INTRODUCTION: Obturation materialswith superior adaptation and sealing capacity are crucial for root canal treatment success. OBJECTIVE: To compare adaptation and tubular penetration depth of three different sealers (Ceraseal, AH Plus and Endofill)with single cone obturation technique using scanning electron microscope (SEM). MATERIALS AND METHODS: Thirty-six extracted single canaled mandibular premolar teeth were decoronated and prepared using ProTaper Universal rotary files till F3. Teeth were randomly divided into three groups according to sealer type used: Group I: Ceraseal (Bioceramic), Group II: AH Plus (Resin), Group III: Endofill (Zinc Oxide Eugenol). All roots were obturated with a single F3 cone with one of the assigned sealers. Teeth were sectioned into threethirds horizontally and analyzed for sealer adaptation and penetration using SEM. RESULTS: Regarding sealer adaptation,roots filled with AH Plus showed better adaptation (less mean gap sizes) than other sealers in the three canal thirdsand the least mean gap sizes were recorded in the apical third in all groups. Along the complete canal length,a significant difference was found between AH Plus group and other groups (P <0.0001).Regarding tubular penetration depth, Ceraseal showed greater mean penetration depth in the middle and apical thirds than other sealers. However, along complete canal length, no significant difference was found between Ceraseal and AH Plus groupswith a significant difference noted between both groups and Endofillgroup (P <0.0001). CONCLUSION: Single cone obturation with AH Plus and Ceraseal could result in significant better adaptation and tubular penetration than Endofill sealer.","PeriodicalId":7723,"journal":{"name":"Alexandria Dental Journal","volume":" 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138616703","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}

引用次数: 0

ASSESSMENT OF THREE HEAT TREATED SINGLE FILE SYSTEMS IN GUTTA-PERCHA REMOVAL USING CONE BEAM COMPUTED TOMOGRAPHY (AN IN VITRO STUDY) 使用锥形束计算机断层扫描评估三种热处理单锉系统在去除牙胶方面的效果（体外研究）

Alexandria Dental Journal Pub Date : 2023-12-01 DOI: 10.21608/adjalexu.2022.144389.1291

Mohamed Elnagar, Ahmed Mobarak, Amr Abdallah

{"title":"ASSESSMENT OF THREE HEAT TREATED SINGLE FILE SYSTEMS IN GUTTA-PERCHA REMOVAL USING CONE BEAM COMPUTED TOMOGRAPHY (AN IN VITRO STUDY)","authors":"Mohamed Elnagar, Ahmed Mobarak, Amr Abdallah","doi":"10.21608/adjalexu.2022.144389.1291","DOIUrl":"https://doi.org/10.21608/adjalexu.2022.144389.1291","url":null,"abstract":"INTRODUCTION: Absolute removal of the defective root filling material and regaining apical patency is the primary factor of endodontic retreatment success. AIM OF THE STUDY: Assessment of the ability of Reciproc R25 (VDW, Munich, Germany), Reciproc blue (VDW, Munich, Germany) and the XP-endo shaper (FKG Dentaire, La Chaux-de-Fonds, Switzerland) thermally treated rotary files in removing of the root filling material from oval shaped canals using cone beam computed tomography (CBCT). MATERIALS AND METHODS: Thirty six extracted single canaled human mandibular premolar teeth were prepared chemo-mechanically using Revo-S rotary file system (Micro-Mega, France) and obturated. The teeth were randomly allocated into three groups (n=12 each) depending on files used in retreatment procedure as follow: Group I: Reciproc R25, Group II: Reciproc blue, Group III: XP-endo shaper. Pre and post retreatment scans were done using CBCT to calculate the volume of the remaining gutta percha by using computer software (Osirix lite). Time consumed by each file was recoded until gutta percha was completely removed. RESULTS: All used files were not able to remove the entire root filling material from the canals. No statistically significant differences (P> 0.05) in residual gutta percha were detected between the groups, the percentage of reduction was 88.87 % in (Group Ⅰ ), 92.22 % in (Group Ⅱ ), and 88.60 % in (Group Ⅲ ). The XP-endo shaper required more time with statistically significant difference than the Reciproc groups in gutta percha removal. CONCLUSION: All systems removed the root filling material from oval shaped canals effectively. Both reciproc systems were faster than XP-endo shaper in gutta percha removal.","PeriodicalId":7723,"journal":{"name":"Alexandria Dental Journal","volume":" 34","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138612317","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}

引用次数: 0

EVALUATION OF THE SHAPING ABILITY OF EDGEFILE X-7, XP-ENDO SHAPER AND TRUNATOMY ROTARY FILES IN MESIOBUCCAL CANALS OF LOWER MANDIBULAR MOLARS USING CONE BEAM COMPUTED TOMOGRAPHY (IN-VITRO STUDY) 使用锥形束计算机断层扫描评估 Edgefile X-7、XP-endo 成型器和 Trunatomy 旋转锉在下颌磨牙中颊面管中的成型能力（体外研究）

Alexandria Dental Journal Pub Date : 2023-12-01 DOI: 10.21608/adjalexu.2022.147077.1293

moustafa bakr, Ahmed Mobarak, Amr Abdallah

{"title":"EVALUATION OF THE SHAPING ABILITY OF EDGEFILE X-7, XP-ENDO SHAPER AND TRUNATOMY ROTARY FILES IN MESIOBUCCAL CANALS OF LOWER MANDIBULAR MOLARS USING CONE BEAM COMPUTED TOMOGRAPHY (IN-VITRO STUDY)","authors":"moustafa bakr, Ahmed Mobarak, Amr Abdallah","doi":"10.21608/adjalexu.2022.147077.1293","DOIUrl":"https://doi.org/10.21608/adjalexu.2022.147077.1293","url":null,"abstract":"INTRODUCTION: The main aim of mechanical instrumentation during root canal treatment is to remove the inner layer of dentin to facilitate removing of all bacteria and smear layer from the canal. New rotary files designs allow more contact to canal walls to improve canal cleaning and shaping. AIM OF STUDY: The goal of this study was to assess the shaping ability of EdgeFile X-7, XP-endo shaper and TruNatomy rotary files in mesiobuccal root canals of mandibular molars using cone beam computed tomography (CBCT). METHODS: Thirty unidentified extracted roots of human mandibular molar teeth of mild root curvature were selected for this study. Chemo-mechanically preparation of all the teeth were done using three different nickel titanium (Ni-Ti) rotary file systems. The teeth were divided randomly into three groups (n=10 each) according to the rotary files used in preparation procedure as follows: Group I: EdgeFile X-7, Group II: XP-endo shaper, Group III: TruNatomy. The incidence of canal transportation and centering ability by these rotary files’ instrumentation were assessed using CBCT pre and post scanning. RESULTS: Variation in canal transportation and centering ability between groups were compared using Kruskal Wallis test and Freidman test at three mm, six mm, and nine mm levels within all groups. Significance level was set at P value equal 0.05. Showing no significance difference between the three rotary files including centering ability and canal transportation. CONCLUSION: All the three rotary systems were proved to prepare root canals with low canal transportation and good centering ability.","PeriodicalId":7723,"journal":{"name":"Alexandria Dental Journal","volume":" 18","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138612720","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}

引用次数: 0

INTRALESIONAL INJECTION OF ETHANOLAMINE OLEATE WITH OR WITHOUT LOCAL ANAESTHETIC AGENT TO ASSESS POSTOPERATIVE PAIN IN ORAL VENOUS MALFORMATIONS (A RANDOMIZED CONTROLLED CLINICAL TRIAL) 口腔静脉畸形术后疼痛评估（随机对照临床试验）：油酸乙醇胺（含或不含局部麻醉剂）的穴内注射

Alexandria Dental Journal Pub Date : 2023-12-01 DOI: 10.21608/adjalexu.2022.167165.1320

Omneya Mashaly, Ahmed El Mahallawy, Tasneem Amer

{"title":"INTRALESIONAL INJECTION OF ETHANOLAMINE OLEATE WITH OR WITHOUT LOCAL ANAESTHETIC AGENT TO ASSESS POSTOPERATIVE PAIN IN ORAL VENOUS MALFORMATIONS (A RANDOMIZED CONTROLLED CLINICAL TRIAL)","authors":"Omneya Mashaly, Ahmed El Mahallawy, Tasneem Amer","doi":"10.21608/adjalexu.2022.167165.1320","DOIUrl":"https://doi.org/10.21608/adjalexu.2022.167165.1320","url":null,"abstract":"INTRODUCTION: Sclerotherapy is an established treatment modality for oral vascular anomalies. A sclerosing agent such as Ethanolamine Oleate has been widely used for oral vascular malformation, especially low-flow venous lesions, however, pain is one of the most common postoperative complications. Therefore, Ethanolamine Oleate with an anesthetic agent may help in reducing postoperative pain in cases of oral venous malformation. AIM OF THE STUDY: To compare the effect of Ethanolamine Oleate as a sclerosing agent for oral venous malformation with and without an anesthetic agent in reducing postoperative pain and resolution of the lesion. MATERIALS AND METHODS: 16 patients with oral venous malformation were recruited and randomly allocated into two equal groups. Sclerotherapy with Ethanolamine Oleate was performed for all patients in Group A (Control Group) eight patients were injected with Ethanolamine Oleate alone and for Group B (Study Group) eight patients were injected with Ethanolamine Oleate mixed with Lidocaine. RESULTS: There was a statistically significant decrease between the two studied groups. Using the VAS scale, showed a significant decrease in post-operative pain reaching an (87.5%) success rate in Group B, especially two days postoperatively. CONCLUSION: This study confirmed the positive effect of intralesional injection of EO and Lidocaine in OVMs regarding postoperative pain and resolution of the lesion.","PeriodicalId":7723,"journal":{"name":"Alexandria Dental Journal","volume":" 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138613063","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}

引用次数: 0

KNOWLEDGE OF EGYPTIAN GENERAL DENTISTS, ENDODONTISTS, AND PEDIATRIC DENTISTS REGARDING MANAGEMENT OF TRAUMATIC DENTAL INJURIES IN CHILDREN: A CROSS SECTIONAL STUDY 埃及普通牙科医生、牙髓病学家和儿童牙科医生对儿童牙外伤处理的了解：横断面研究

Alexandria Dental Journal Pub Date : 2023-12-01 DOI: 10.21608/adjalexu.2023.244526.1426

Yasmine Elhamouly

{"title":"KNOWLEDGE OF EGYPTIAN GENERAL DENTISTS, ENDODONTISTS, AND PEDIATRIC DENTISTS REGARDING MANAGEMENT OF TRAUMATIC DENTAL INJURIES IN CHILDREN: A CROSS SECTIONAL STUDY","authors":"Yasmine Elhamouly","doi":"10.21608/adjalexu.2023.244526.1426","DOIUrl":"https://doi.org/10.21608/adjalexu.2023.244526.1426","url":null,"abstract":"INTRODUCTION : Traumatic dental injuries (TDIs) are common in childhood. Treatment options for TDIs are based on the extent and nature of the injury. General dentists play an important role in the treatment of TDIs. OBJECTIVE: this study aimed to assess the knowledge of general dental practitioners (GDPs) compared to pediatric dentists (PDs), and endodontists (EDs) regarding emergency management of TDIs and application of International Association of Dental Traumatology (IADT) guidelines in a sample of dentists in Alexandria, Egypt. MATERIAL AND METHODS: Participants completed a two-part questionnaire (ten questions covering demographic, professional, and personal data and 14 questions about given trauma cases scenarios) in electronic format to assess their knowledge regarding TDIs. One score was dedicated to each correct answer: score of 0-4= poor knowledge, scores 5-8, 9-11 and 12-14= moderate, good and excellent, respectively. Data was collected and transferred to a secured spread sheet. Frequencies and percentage were calculated for qualitative variables. Comparisons between the three categories were done using Chi-square test. Ordinal logistic regression was conducted to assess the association between dental specialties with knowledge score. Odds ratio (OR) and 95% confidence intervals (CI) were calculated. Significance was set at p value < 0.05. RESULTS: PDs and EDs had a higher knowledge score than GDPs (P= 0.01, B=11.19, 95%CI: 1.74, 71.77) and (P= 0.000, B= 36.18, 95%CI: 5.29, 247.28), respectively. Dentists who assessed their knowledge as comprehensive or sufficient had a higher knowledge score than those who assessed their knowledge as fragmentary (P= 0.000, B=24.58, 95%CI: 8.71, 69.30) and (P= 0.000, B= 7.93, 95%CI: 3.60, 17.48) respectively. CONCLUSIONS : The knowledge level of GDPs on TDIs was significantly lower than that of PDs and EDs, while no significant difference was encountered between PDs and EDs.","PeriodicalId":7723,"journal":{"name":"Alexandria Dental Journal","volume":"70 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138622709","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}

引用次数: 0

EFFECT OF ELECTRONIC CIGARETTES SMOKING ON COLOR STABILITY OF CAD/CAM ACRYLIC RESIN: IN VITRO STUDY 吸食电子香烟对 CAD/CAM 丙烯酸树脂颜色稳定性的影响：体内研究

Alexandria Dental Journal Pub Date : 2023-12-01 DOI: 10.21608/adjalexu.2022.152513.1302

Ahmed Mahmoud, Mohamed EL-Attar, Mohamed Abu Saied, Ingy Hassan

{"title":"EFFECT OF ELECTRONIC CIGARETTES SMOKING ON COLOR STABILITY OF CAD/CAM ACRYLIC RESIN: IN VITRO STUDY","authors":"Ahmed Mahmoud, Mohamed EL-Attar, Mohamed Abu Saied, Ingy Hassan","doi":"10.21608/adjalexu.2022.152513.1302","DOIUrl":"https://doi.org/10.21608/adjalexu.2022.152513.1302","url":null,"abstract":"INTRODUCTION: The most common electronic nicotine delivery system is electronic cigarettes. Most of electronic cigarettes consist of a battery and electric heater used to aerosolize a liquid to produce vapor which the user inhales. Poly methyl methacrylate comes in contact with a variety of foods and beverages of different temperatures, as a result, it is prone to absorbing a variety of pollutants, altering its physical structure and appearance. OBJECTIVES: This study aimed to investigate the effects of electronic cigarettes smoking on color stability of CAD/CAM acrylic resin. MATERIAL AND METHODS: This study was in vitro study in which sixty specimens of CAD/CAM acrylic resin was exposed to aerosols which were flavored and non-flavored with nicotine content (0 mg, 6 mg and 12 mg). A portable suction machine was modified to simulate smoking in vivo. Each specimen was exposed to 20 cycles of aerosol released by a single ECIG device using the smoking chamber. Color measurements were performed using a calibrated spectrophotometer on the specimens before and after ECIG exposure RESULTS: Specimens exposed to flavorless 0 mg. nicotine aerosol showed the lowest delta E value 2.39 (±0.16) , while Specimens exposed to flavored 12 mg. nicotine showed the highest values 4.14 (±0.19). No significant difference in color change found between groups exposed to flavorless e-liquid, while a significant difference found between flavored 0 mg. nicotine and 12 mg. nicotine groups (P = 0.002).Also, a significant difference found between flavored 6 mg. nicotine and 12 mg. nicotine groups (P = 0.002). According to Two Way ANOVA, both flavor and nicotine contents have a significant effect on color change (P <0.0001). CONCLUSION: Exposure to flavored and non-flavored electronic cigarettes aerosol of different nicotine concentrations changed the color of acrylic resin. Both flavor and nicotine contents have a significant effect on color change.","PeriodicalId":7723,"journal":{"name":"Alexandria Dental Journal","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138626656","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}

引用次数: 0

EFFICACY OF HYPERBARIC OXYGEN THERAPY ON REGENERATION OF MANDIBULAR BONY DEFECTS IN RATS WITH INDUCED DIABETES MELLITUS 高压氧疗法对糖尿病大鼠下颌骨缺损再生的疗效

Alexandria Dental Journal Pub Date : 2023-12-01 DOI: 10.21608/adjalexu.2022.158877.1309

Rodina H. Eldisoky, Salwa Younes, Samia Omar, Hagar S. Gharib, Tarek A. Tamara

{"title":"EFFICACY OF HYPERBARIC OXYGEN THERAPY ON REGENERATION OF MANDIBULAR BONY DEFECTS IN RATS WITH INDUCED DIABETES MELLITUS","authors":"Rodina H. Eldisoky, Salwa Younes, Samia Omar, Hagar S. Gharib, Tarek A. Tamara","doi":"10.21608/adjalexu.2022.158877.1309","DOIUrl":"https://doi.org/10.21608/adjalexu.2022.158877.1309","url":null,"abstract":"INTRODUCTION: Bone repair abnormalities have been associated with diabetes mellitus (DM), including inhibited osteoblastic differentiation, induced osteoblast apoptosis, and compromised angiogenesis. Thus, restoring critical-sized defects is challenging in clinical practice, especially in people with diabetes. Hyperbaric oxygen therapy (HBOT) can be used together with bone grafts to reconstruct these defects. OBJECTIVES: To evaluate the effect of HBOT on the regeneration of critical-sized defects in rats with induced diabetes mellitus. MATERIALS AND METHODS: Twelve adult male albino rats were divided into two groups of 6 animals each. Animals in both groups were given a single intraperitoneal injection of streptozotocin to induce DM. Critical-sized defects were created in the posterior mandibles and filled with beta-tricalcium phosphate (β -TCP). The study group was subjected to HBOT at (2.4 ATA) for 5 days per week for 90 minutes each. Animals were euthanized one week postoperatively. Bone regeneration was assessed histologically and histomorphometrically. Angiogenesis was evaluated by immunohistochemistry against vascular endothelial progenitor cell marker (CD34), and the microvessel density (MVD) was calculated. RESULTS: Histological and immunohistochemical results revealed superior bone regeneration and angiogenesis in the study group. These results were further confirmed by the histomorphometrical analysis which showed higher MVD and new bone surface area in the study group compared to the control group. CONCLUSIONS: HBOT enhanced bone regeneration, improved the regenerative effect of β -TCP, and increased angiogenesis in the defects.","PeriodicalId":7723,"journal":{"name":"Alexandria Dental Journal","volume":" 25","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138616131","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}

引用次数: 0

EVALUATION OF STABILITY AND CRESTAL BONE CHANGES AROUND IMPLANTS PLACED AT CRESTAL VERSUS SUBCRESTAL LEVEL IN CONTROLLED TYPE TWO DIABETIC PATIENTS 评估二型糖尿病患者在骨嵴与骨嵴下植入种植体的稳定性和骨嵴变化

Alexandria Dental Journal Pub Date : 2023-12-01 DOI: 10.21608/adjalexu.2022.151775.1300

Asmaa Elserity, Abd El Aziz Khalil, Maha Talaab, Riham Fliefel

{"title":"EVALUATION OF STABILITY AND CRESTAL BONE CHANGES AROUND IMPLANTS PLACED AT CRESTAL VERSUS SUBCRESTAL LEVEL IN CONTROLLED TYPE TWO DIABETIC PATIENTS","authors":"Asmaa Elserity, Abd El Aziz Khalil, Maha Talaab, Riham Fliefel","doi":"10.21608/adjalexu.2022.151775.1300","DOIUrl":"https://doi.org/10.21608/adjalexu.2022.151775.1300","url":null,"abstract":"INTRODUCTION :Peri-implant bone level preservationis the key to maintainingperi-implant soft tissue and stability.Many studies have discussed the role of placing dental implants at various depths on crestal bone loss, but they were debatable. OBJECTIVES: To compare clinically and radiographically the effect of placing implants atcrestal versus subcrestal levels on the crestal bone lossand stability evaluation in controlled type 2diabetic patients. MATERIALS AND METHODS: 22 controlleddiabetic patients were randomized accordingto placement depth (group I: 11 implants were placed equicrestally) (group Ⅱ : 11implants were placed 1mm subcrestally). Stability of implants, clinical and radiographical assessment were done for both groups. RESULTS: 19 implants were included in our study (10 crestal and 9 subcrestal). There were no statistically significant differences in bleeding index and probing depth between the 2 groups while plaque index was greateramong subcrestal group. Crestal bone loss mesiodistally was significantly higherin crestal group, whilethere was no significant difference buccolingually between crestal and subcrestal groups. Stabilityvalues weresignificantly greater in subcrestal group at loading time. CONCLUSION: Sub-crestal implant placement is preferable for controlled type 2 diabetic patients as it decreases the probability of implant thread exposureprovided that careful oral hygiene care is followed and regular periodic checks to maintain peri-implantsoft tissue and dental bone health.","PeriodicalId":7723,"journal":{"name":"Alexandria Dental Journal","volume":" 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138620688","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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