Tanta Dental Journal最新文献

{"title":"Impact of two energetic drinks on color stability, surface roughness and microhardness of some ceramic and hybrid materials","authors":"Nada El-Zayat, S. El-Safty, A. Korsel, Mahmoud E.-S. Shakal","doi":"10.4103/tdj.tdj_25_21","DOIUrl":"https://doi.org/10.4103/tdj.tdj_25_21","url":null,"abstract":"Objective To evaluate the impact of two energetic drinks on color stability (CS), surface roughness (SR) and microhardness (HV) of some ceramic and hybrid materials. Materials and methods A total of 72 square-shaped samples (0.8 mm in thickness, 10 mm in width and 12 mm in length) were divided into three groups (n = 24) according to the studied materials: Celtra Duo, IPS e.max CAD/CAM and Nacera Hybrid. Each group was subdivided into three subgroups (n = 8) according to the three immersion solutions applied: artificial saliva, Hype and Power horse energetic drinks. Samples were sectioned using an Isomet 4000 (Buehler, Lake Bluff, USA) and then stored in artificial saliva for 24 h before doing the baseline color, surface roughness and microhardness measurements. For determination of color change (ΔE), a reflective spectrophotometer was used. Surface roughness (SR) testing was carried out using an optical profilometer with a built-in camera and the microhardness (HV) investigation was performed with a Microhardness Digital Tester. After 60 days of immersion in energetic drinks, these measurements for color stability, surface roughness and microhardness were repeated in the same way. Data were tabulated and analyzed using a two-way ANOVA followed by one-way ANOVA and Tukey's post-hoc test with a significance level assigned at P ≤ 0.05 for all tests. Results Statistical analysis revealed significant differences between studied groups for CS (P = 0.031), SR (P = 0.012) and HV (P = 0.028). Celtra Duo recorded the lowest color change (0.57 ± 0.09) and surface roughness (0.2499 ± 0.0033) and greatest microhardness (659.62 ± 6.10) with all immersion solutions. Nacera Hybrid material showed poorer values in all investigated properties compared to Celtra Duo and IPS e.max ceramics. For all studied materials, the greatest effect of immersion solutions on CS, SR and HV was exhibited by Power horse followed by Hype and artificial saliva. Conclusions The energetic drinks studied significantly increased SR and decreased CS and VH of Nacera Hybrid. Celtra Duo and IPS e.max CAD/CAM ceramics showed greater resistance to acidic energetic drinks compared Nacera Hybrid material. Clinical significance It is essential for the dentist to reinforce the awareness of patients regarding the risks of heavy consumption of energetic drinks. Nacera Hybrid material is a promising material but should not be used in esthetic restorations.","PeriodicalId":22324,"journal":{"name":"Tanta Dental Journal","volume":"15 1","pages":"8 - 17"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85833050","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}

{"title":"Distraction osteogenesis in treatment of unilateral alveolar cleft","authors":"I. Nowair, Marwa Ibrahim, Ahmed Elshreif","doi":"10.4103/tdj.tdj_20_21","DOIUrl":"https://doi.org/10.4103/tdj.tdj_20_21","url":null,"abstract":"Objective This study was planned to compare the distraction of the lesser segment versus the greater segment via usage of (Liou cleft distractor) in repair of unilateral alveolar cleft. Patients & Methods 16 patients with unilateral alveolar clefts were included in this study. They were divided into two equal groups according to the osteotomized segment, Group I: in which the lesser bone segment was osteotomized for alveolar cleft repair. Group II: in which the greater segment was osteotomized for alveolar cleft repair. Results Stage I distraction: after three months, showed significant difference in the width of the cleft side in both groups as P-value was 0.007 in group I and P-value was 0.001 in group II. No significant differences in the vitality and mobility of teeth in both groups. The amount of relapse in the regenerate area at the different observation periods 3 and 6 months between both groups were statistically significant (P-value 0.018). Radiographic finding showed no significant difference of the inclination changes of the transported segment in group I (P-value 0.816), while in group II showed significant difference (P-value 0.001). Stage II alveolar cleft grafting: graft resorption and recurrence of fistula was recorded in one case of group II. The differences of the density of the grafted bone between the first month and six months in each group postoperatively were statistically significant in both groups as P-value 0.001 and 0.001 in group I and Group II respectively. Conclusion Both the lesser and the greater segments are suitable for treatment of alveolar cleft with some drawbacks related to the palatal inclination of transported segment in group II as compared to group I.","PeriodicalId":22324,"journal":{"name":"Tanta Dental Journal","volume":"61 1","pages":"23 - 28"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86077612","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}

{"title":"Immediately loaded implant retained mandibular overdenture in controlled diabetic patients: results of 5 years prospective clinical study","authors":"Hesham S. Borg, TamerM.N. Mostafa, Ahmed Mohamed Alam-Eldein","doi":"10.4103/tdj.tdj_18_21","DOIUrl":"https://doi.org/10.4103/tdj.tdj_18_21","url":null,"abstract":"Objectives This cohort study was carried out to evaluate dental implants retained overdenture in controlled type II diabetic patients after 5 years of immediate loading. Patients and methods Thirty completely edentulous patients (18 men and 12 women) with a mean age of 62 years old were included in this study. For each patient, two immediately loaded implants were inserted at the interforaminal region with ball and socket attachments to retained mandibular overdenture. Patients were evaluated clinically and radiographically at baseline (overdenture insertion) and after 6 months, 1, 3, and 5 years after loading. Data were collected and statistically analyzed using repeated measures analysis of variance test. Results The cumulative implant success rate at 5 years was 100%. There was no statistically significant difference along the time intervals (P ≥ 0.05). Marginal bone loss was 0.796 ± 0.187 after 5 years of function. No complications or implant failure were reported. Conclusions Within the limitations of this study concerning small sample size, age range and the value of glycosylated hemoglobin test, dental implants can be immediately loaded successfully to retain overdentures in type II diabetic edentulous patients.","PeriodicalId":22324,"journal":{"name":"Tanta Dental Journal","volume":"49 1","pages":"114 - 119"},"PeriodicalIF":0.0,"publicationDate":"2021-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82245573","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}

{"title":"Digital versus conventional impression technique for flabby ridge in complete denture construction","authors":"Mohammed Gamal Elkafrawy, S. Asal, A. El-Sheikh","doi":"10.4103/tdj.tdj_15_21","DOIUrl":"https://doi.org/10.4103/tdj.tdj_15_21","url":null,"abstract":"Background In the presence of flabby tissue, manufacturing a stable denture becomes a challenge. Flabby ridges will be easily displaced under occlusal stresses owing to unfavorable support, resulting in compromised denture retention. Intraoral digital impression has not been exposed to deal with this problem. Purpose To compare intraoral digital impression versus conventional selective pressure impression technique for maxillary flabby ridge registration in complete denture construction regarding soft tissue assessment. Patients and methods This crossover study enrolled seven completely edentulous patients with a localized maxillary anterior flabby ridge. Each patient received two identical maxillary complete dentures opposing one mandibular complete denture. The first denture was constructed using intraoral scanning of the edentulous maxillary ridge then compressing only the healthy tissues by 0.25 mm using Exocad software to simulate selective pressure technique, the second denture was constructed through conventional selective pressure impression technique. Each maxillary denture was subjectively evaluated for soft tissue response at 15 days and 3 months with 15 days rest period in between, data was statistically analyzed using χ2 test. Results There was statistically significant difference between the two maxillary dentures regarding soft tissue assessment in favor of the second maxillary denture. Conclusion Prosthodontist must pay more attention during intraoral scanning of edentulous arch due to lack of anatomical landmarks. More and more attention must be paid during intraoral scanning of edentulous ridges with flabby tissues due to the difference in the degree of mucosa compressibility.","PeriodicalId":22324,"journal":{"name":"Tanta Dental Journal","volume":"8 1","pages":"109 - 113"},"PeriodicalIF":0.0,"publicationDate":"2021-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86125993","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}

{"title":"Angina ludovici-submandibular swelling: A case report","authors":"A. Ravi, Manasa Suresh, Anita Varghese, S. Levingston, Preethi A. Poonja, P. Rao, Raghavendra Kini","doi":"10.4103/tdj.tdj_2_21","DOIUrl":"https://doi.org/10.4103/tdj.tdj_2_21","url":null,"abstract":"Ludwig's angina is firm, acute, toxic cellulitis of the submandibular and sublingual spaces bilaterally and of the submental space. As early as 1796, extraction of abscessed teeth was considered contraindicated because it might give rise to extensive inflammation and angina in a dangerous degree. Three fs became evident even before the first written description of the disease: it was to be feared, it rarely becomes fluctuant, and it was often fatal. A sensation of chocking and suffocation (angina) often was combined with the name of the author (Ludwig's) who fully described it in 1836. Here we report a case of Ludwig's angina in a 34-year-old female.","PeriodicalId":22324,"journal":{"name":"Tanta Dental Journal","volume":"26 1","pages":"140 - 142"},"PeriodicalIF":0.0,"publicationDate":"2021-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86584527","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}

{"title":"Fractured zirconia restorations repair bonding durability using two different adhesives","authors":"Ibraheem Haidar, Gaber Masoud, M. Shakal","doi":"10.4103/tdj.tdj_5_21","DOIUrl":"https://doi.org/10.4103/tdj.tdj_5_21","url":null,"abstract":"Purpose This study aimed to evaluate the shear bond strength and durability of two different adhesives used to repair fractured zirconia restorations before and after water storage and thermocycling stress. Materials and methods Forty zirconia disc samples (10 mm in diameter, 2 mm in thickness) were prepared by CAD/CAM systems (SILADENT) divided in two main groups: (a) group 1: 20 samples were treated with Futurabond M+ adhesive, (b) group 2: 20 samples were treated with Panavia F 2.0 adhesive. All samples were individually and horizontally mounted on a computer-controlled materials testing machine with a load cell of 5 kN and data were recorded using computer software. Intragroup analysis and comparison between two groups will be done using one way analysis of variance test. Results Data were presented as mean, SD, range (minimum–maximum) for numerical values. Student t test and analysis of variance were used to study the effect of cements and thermal aging on mean values. χ2 test was done between failure modes scores. The significance level was set at P value less than or equal to 0.05 and 95% confidence interval. Shear bond strength descriptive statistics of shear bond strength (MPa) showing mean, SD, minimum, maximum, and 95% confidence intervals (low and high) values for both cement groups before and after thermal aging. Conclusion There is significant difference between shear bond strength before and after aging in case of Futurabond M+ but in case of Panavia F 2.0 the difference is nonsignificant. Panavia F 2.0 has comparable shear bond strength to Futurabond M+ in case of water storage and thermocycling aging but in nonaging, Futurabond M+ show higher shear bond strength than Panavia F 2.0. Panavia F 2.0 has provided stable bonding values even with water storage and thermocycling stress.","PeriodicalId":22324,"journal":{"name":"Tanta Dental Journal","volume":"18 1","pages":"120 - 127"},"PeriodicalIF":0.0,"publicationDate":"2021-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85312820","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}

{"title":"Calcifying epithelial odontogenic tumor of the maxilla (Pindborg tumor): surgical and immunohistochemical approach","authors":"I. Nowair, O. Wahba, A. Al Shareef","doi":"10.4103/tdj.tdj_13_21","DOIUrl":"https://doi.org/10.4103/tdj.tdj_13_21","url":null,"abstract":"Background Calcifying epithelial odontogenic tumor (CEOT) is a benign but locally aggressive epithelial odontogenic tumor that most commonly occurs in the mandible. Although the maxillary CEOT is rare, its biological behavior is indolent. Aim A comprehensive immunohistochemical study was performed concerning the local aggressive behavior of this tumor. Patients and methods In this study, 12 cases of patients who were attended in the outpatient clinic of the Oral and Maxillofacial Department, Faculty of Dentistry, Tanta University were included in this study after confirmed incisional biopsy of CEOT. The patients were examined clinically preoperative and aspiration test was done. After finishing the tumor resection, closure of the maxillary defect was done by double layer repair of the defect. Biopsy of this tumor was stained by the following markers p63, Ki67, type IV collagen, smooth muscle actin (SMA), CK19, CK5/6, S100 to study the biological behavior of the tumor. Results The neoplastic cells were diffusely cytoplasmic immunoreactive for CK19 and CK5/6. Also, the tumor cells showed mild to moderate staining to SMA. Weak intensity of collagen type IV was detected. The amyloid-like deposit was immunonegative for both SMA and type IV collagen. p63 was expressed in all studied cases. Strong to moderate nuclear staining to p63 was detected in the tumor cells. The Ki67 showed high proliferation activity of tumor cells differing from the benign tumor nature. Conclusion Maxillary CEOT tends to grow more rapidly and not be circumscribed, suggesting that more aggressive surgery is required in these specific cases.","PeriodicalId":22324,"journal":{"name":"Tanta Dental Journal","volume":"11 1","pages":"128 - 134"},"PeriodicalIF":0.0,"publicationDate":"2021-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78787448","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}

{"title":"Maxillary midline diastema among a group of Egyptian adult populations (prevalence and etiology)","authors":"A. Rashid, A. Khalifa","doi":"10.4103/tdj.tdj_34_20","DOIUrl":"https://doi.org/10.4103/tdj.tdj_34_20","url":null,"abstract":"Purpose This study was performed to identify the prevalence and etiological factors of maxillary midline diastema among a sample of adult patients undergoing orthodontic treatment in orthodontic private clinics in Qaloubya, Fayoum, and Giza governorates. Patients and methods Three hundred seventy-five patients (199 females and 176 males) were included in this study. The full records (intraoral photographies and radiographs) of all patients were examined and surveyed for the presence or absence of maxillary midline diastema and the possible etiological factors. Results 17.3% of the studied patients showed maxillary midline diastema, while 82.7% of them did not show diastema. There was no significant difference between the prevalence of midline diastema in different sexes (P = 0.079). The most common etiological factors were 38.5% congenitally missed laterals, 33.8% highly attached frenum, 20.0% generalized spaces, and 26.2% had flared incisors. Conclusion Prevalence of midline diastema in the studied patients was 17.3%, while 82.7% of patients did not have diastema.","PeriodicalId":22324,"journal":{"name":"Tanta Dental Journal","volume":"64 13 1","pages":"135 - 139"},"PeriodicalIF":0.0,"publicationDate":"2021-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88941163","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}

{"title":"Microstrain analysis of implants retained complete mandibular overdenture by using two different attachments (an in vitro study)","authors":"Madiha Abo Goher, Zeinab El-Shorbagy, Zainab Abdul Aal","doi":"10.4103/tdj.tdj_41_19","DOIUrl":"https://doi.org/10.4103/tdj.tdj_41_19","url":null,"abstract":"Purpose The aim of this work is to evaluate strain analysis of two piece implants retained complete edentulous mandibular overdenture with two different attachment systems bar and clip attachment and extracoronal resilient attachment (ERA + bar) by using strain gauge analysis. Materials and Methods This in vitro strain analysis of implants retained complete mandibular overdenture with two attachments carried out on two completely edentulous mandibular models covered by 2 mm thickness mucosa. Two finished dentures were constructed one denture for each group. Group 1: two implants at canine region with bar attachment. Group 2: two implants at canine region with bar and ERA attachments. Four strain gauges were cemented around each implant, buccal, lingual, mesial, and distal. A 50 N static load was applied on the experimental model in vertical and oblique directions. Strain data of each group was collected tabulated and statically analyzed. Results The result of this study revealed that the difference of microstrain between the two groups was significant as the maximum microstrain recorded was found in group 1 followed by group 2. The oblique forces increase the resulting strain than vertical forces. Conclusion There are different patterns of strain analysis at bone–implant interface between the studied attachment designs, the ERA-bar combination exhibited better strain analysis than bar-clip system","PeriodicalId":22324,"journal":{"name":"Tanta Dental Journal","volume":"177 1","pages":"84 - 87"},"PeriodicalIF":0.0,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85567022","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}

{"title":"A rare case report of adenomatoid odontogenic tumor in the mandibular anterior region","authors":"Joseph Johny, P. Sasikumar, Neethu Kuttipurath, Anjana Krishna, Rejni Varghese","doi":"10.4103/tdj.tdj_10_21","DOIUrl":"https://doi.org/10.4103/tdj.tdj_10_21","url":null,"abstract":"Adenomatoid odontogenic tumor is a relatively uncommon, benign (hamartomatous), noninvasive neoplasm of odontogenic origin with slow but progressive growth. It affects young individuals with a female predominance, mainly occurring in the second decade of life and has a striking tendency to occur in the anterior maxilla. Herewith, we present a rare case report of an unusual case of adenomatoid odontogenic tumor located in the mandibular anterior left region.","PeriodicalId":22324,"journal":{"name":"Tanta Dental Journal","volume":"91 1","pages":"106 - 108"},"PeriodicalIF":0.0,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85383276","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}