scholarly journals CBCT for estimation of the cemento-enamel junction and crestal bone of anterior teeth

Open Medicine ◽  
2020 ◽  
Vol 15 (1) ◽  
pp. 774-781
Author(s):  
Agnieszka Srebrzyńska-Witek ◽  
Rafał Koszowski ◽  
Ingrid Różyło-Kalinowska ◽  
Magdalena Piskórz
Keyword(s):  
Cone Beam ◽  
Lingual Side ◽  
Implant Placement ◽  
Anterior Teeth ◽  
Study Population ◽  
Crucial Information ◽  
The Mean ◽  
Mandibular Teeth ◽  
The Relationship ◽  
Bone Margin

AbstractThe aim of the study is to evaluate the usefulness of cone-beam computed tomography (CBCT) in the assessment of the relationship between the cemento-enamel junction (CEJ) and bone crest of the anterior mandibular cortex. The study population comprised 39 males and 61 females, aged 18–71. A GENDEX GXCB-500 machine, i-CAT Vision and CorelDraw 9 software were used. The distances between the CEJ and bone crest at buccal and lingual sides of six anterior mandibular teeth were measured. Descriptive statistical methods, Student’s t-test and ANOVA were used. The mean distance between the bone crest and CEJ was 2.32 mm ± 0.78 mm at the buccal and 2.52 mm ± 0.85 mm at the lingual side. It was found that in males aged over 50 years, the mean distance at the buccal side was 2.84 mm ± 0.79 mm and was significantly higher than in males aged 49 and less – 2.08 mm ± 0.41 mm. The mean distance at the lingual side was 3.28 mm ± 1.08 mm and was significantly lower in the age group of 49 years and less – 2.10 mm ± 0.41 mm. CBCT allows determining the distance between the CEJ and crestal bone margin at buccal and lingual sides. The data provide crucial information for planning orthodontic treatment, implant placement and periodontal therapy.

scholarly journals ASSESSMENT OF PHYSICA L ACT IVITY OF MEMBERS OF THE HELICO PTER EMERGENCY MEDICA L SERVICE (HEMS)

2019 ◽  
Vol 7 (2) ◽  
pp. 91-98
Author(s):  
Agata Gaździńska ◽  
Paweł Jagielski ◽  
Robert Gałązkowski
Keyword(s):  
Physical Activity ◽  
Medical Service ◽  
Helicopter Emergency Medical Service ◽  
Team Members ◽  
Winter Sport ◽  
Study Population ◽  
Downhill Skiing ◽  
The Mean ◽  
The Relationship ◽  
Financial Issues

The aim: Assessment of physical activity of members of the Helicopter Emergency Medical Service. Material and methods: The study was conducted in a group of 131 people (65 paramedics, 66 pilots), members of HEMS teams from all bases in Poland, aged 27-59. The characteristics of physical activity was obtained using the author’s questionnaire. Results: The mean age of the study population was 42.73 ± 9.58 years. Pilots were significantly older than paramedics and had significantly higher BMI values (p < 0.05). No significant relationship between the age and BMI in the analyzed groups was found (p > 0.05), while the relationship between the frequency of physical activity and BMI was demonstrated. 70% of subjects undertook physical activity less than three times a week. The most frequently chosen forms were cycling, walking and swimming. Paramedics statistically significant more often than pilots chose wall climbing (p = 0.001). Downhill skiing (61%) was the most common declared winter sport played by pilots, while hiking in the mountains – by paramedics (49%). The most important reason for pilots to take up physical activity was concern for their health (47%), while for paramedics – the pleasure (63%). Paramedics statistically significant more often than pilots indicated a large number of other activities (90.6 vs. 74.2%) and financial issues (18.8 vs. 6.1%) as barriers that prevented more involvement in physical activities. Conclusions: The frequency of physical activity undertaken by HEMS members is insufficient. Low physical activity of HEMS team members has an adverse effect on their nutritional status. It is necessary to take initiatives to promote physical activity in this professional group.

scholarly journals An unresolved issue: The relationship between spot urine protein-to-creatinine ratio and 24-hour proteinuria

2019 ◽  
Vol 47 (3) ◽  
pp. 1179-1184 ◽  
Author(s):  
Davut Akin ◽  
Sehmus Ozmen
Keyword(s):  
Medical Records ◽  
Urine Protein ◽  
Entire Study ◽  
Spot Urine ◽  
Protein Excretion ◽  
Ratio Data ◽  
Study Population ◽  
The Mean ◽  
The Relationship ◽  
H Protein

Objective To investigate the relationship between spot urine protein-to-creatinine (sP/Cr) ratio and 24-h protein excretion in patients with different diagnoses. Methods This retrospective study analysed data from the medical records of patients admitted for24-h proteinuria determination who also had sP/Cr ratio data for the same day. Results A total of 1222 urine samples obtained from 694 adult outpatients were analysed. The mean ± SD age of the patients was 53.6 ± 15.9 years. The mean ± SD 24-h proteinuria and sP/Cr were 1.7 ± 2.4 g/day and 1.8 ± 2.4, respectively. The correlation between the sP/Cr and 24-h protein excretion was high (R2 = 0.89). The sP/Cr ratio accounted for 72% of the variability in 24-h proteinuria in the entire study population. Areas under the curve for 24-h proteinuria at 0.3 g/day, 1.0 g/day and 3.0 g/day were 0.940, 0.966, and 0.949, respectively. The mean + 2SD limits of agreement were between +2.99 and –2.73 g/day according to the Bland Altman analysis. Conclusion This current study found a clinically unacceptable deviation between 24-h proteinuria and sP/Cr ratio. Therefore, the sP/Cr ratio cannot replace 24-h proteinuria. A new method using spot urine protein and creatinine values that is able to minimize under or over estimation is still warranted.

scholarly journals Hydration and Dehydration Periods of Crown Fragments Prior to Reattachment

2012 ◽  
Vol 37 (5) ◽  
pp. 501-508 ◽  
Author(s):  
F Shirani ◽  
MR Malekipour ◽  
V Sakhaei Manesh ◽  
F Aghaei
Keyword(s):  
Analysis Of Variance ◽  
Treatment Option ◽  
Strength Test ◽  
Traumatic Injuries ◽  
Lingual Side ◽  
Anterior Teeth ◽  
Wet Storage ◽  
Minute Period ◽  
The Mean ◽  
Hydration And Dehydration

SUMMARY Introduction Tooth fragment bonding is an excellent treatment option in dealing with traumatic injuries of the anterior teeth. Rewetting the tooth fragment has been shown to increase restoration durability. The present study examined the effect various dry and wet storage periods had on the reattached fragment's bond to the tooth. Materials and Methods One hundred and eight human mandibular incisors were fractured and assigned to undergo a dehydration period of 30 minutes, six hours, 24 hours, or three days before the rewetting procedure. After fracturing the teeth and drying the fragments, each of the specimens was assigned to one of the three main groups (A, B, or C) intended to evaluate the effect of different rehydration periods. Groups A and B underwent a 30-minute and a 24-hour rewetting period, respectively. Group C served as a control (without a rewetting stage). Tooth fragments were then reattached and prepared for the strength test. Force was applied on the lingual side of the tooth at a 1 mm/min rate until failure. Results The mean loads (N) required to fracture the restored teeth were as follows: 204.43 ± 33.48 N, 322.59 ± 34.62 N, and 253.25 ± 29.05 N for groups A, B, and C, respectively. Two-way analysis of variance (p&lt;0.05) showed that rehydration and dehydration periods as well as their interaction caused significant differences in the strength of the final restoration. Multiple comparison tests showed that, in general, significant differences were not seen among different dehydration times prior to the rewetting stage (p&gt;0.05), except in the case of the 30-minute dehydrated specimens (p&lt;0.05). Conclusion Compared to a 30-minute period, a 24-hour rehydration of the tooth fragment before treatment seems to salvage enough moisture to result in an increase in reattachment strength.

scholarly journals Articular Eminence Inclination, Height, and Condyle Morphology on Cone Beam Computed Tomography

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Dilhan İlgüy ◽  
Mehmet İlgüy ◽  
Erdoğan Fişekçioğlu ◽  
Semanur Dölekoğlu ◽  
Nilüfer Ersan
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Mean Value ◽  
Cone Beam ◽  
Articular Eminence ◽  
Age And Gender ◽  
Mean Values ◽  
The Mean ◽  
And Gender ◽  
The Relationship

Aim. The aim of the present study was to examine the relationship between articular eminence inclination, height, and thickness of the roof of the glenoid fossa (RGF) according to age and gender and to assess condyle morphology including incidental findings of osseous characteristics associated with osteoarthritis (OA) of the temporomandibular joint (TMJ) using cone beam computed tomography (CBCT).Materials and Methods. CBCT images of 105 patients were evaluated retrospectively. For articular eminence inclination and height, axial views on which the condylar processes were seen with their widest mediolateral extent being used as a reference view for secondary reconstruction. Condyle morphology was categorized both in the sagittal and coronal plane.Results. The mean values of eminence inclination and height of males were higher than those of females (P<0.05). There were significant differences in the RGF thickness in relation to sagittal condyle morphology. Among the group of OA, the mean value of the RGF thickness for “OA-osteophyte” group was the highest (1.59 mm), whereas the lowest RGF values were seen in the “OA-flattening.”Conclusion. The sagittal osteoarthritic changes may have an effect on RGF thickness by mechanical stimulation and changed stress distribution. Gender has a significant effect on eminence height (Eh) and inclination.

The Relationship of Intrauterine Growth Restriction with Placental Pathologic Changes in Newborns

2020 ◽  
Author(s):  
Hossein Dalili ◽  
Fatemeh Sadat Nayeri ◽  
Seyed Reza Mirjalili ◽  
Seyyed Nasrollah Hossein ◽  
Alireza Abdollahi ◽  
...  
Keyword(s):  
Intrauterine Growth Restriction ◽  
Growth Restriction ◽  
Pathological Examination ◽  
Histological Changes ◽  
Intrauterine Growth ◽  
Study Population ◽  
The Mean ◽  
Relationship Of ◽  
The Relationship ◽  
Restriction Group

Introduction: Intrauterine growth restriction is a multifaceted problem and is associated with a significant increase in the level of morbidity and perinatal mortality. According to some studies, failure of the placenta is responsible for the most cases of intrauterine growth restriction. The aim of this study was to evaluate the placental pathologic changes in the intrauterine growth restriction (IUGR) samples and compare them with normal cases.   Methods: A study population consisted of 60 intrauterine growth restriction neonates and 60 normalized neonates born at Tehran Imam Khomeini Hospital between June 2016 and July 2017. The placenta was weighed, immediately after delivery, and the umbilical cord was separated, then stored in 10% formalin and sent for pathological examination as soon as possible. Data collection was performed according to the following items: the pathologist's report, the results of the infants' examination, and the data in the neonatal cases.   Results: The intrauterine growth restriction group showed a high frequency of placenta infarction (P < 0.001), inflammation of the villous (P < 0.001), villous fibrosis (P = 0.044), villous vascularization disorder (P = 0.001), prevalence of chorioamnionitis (P = 0.027), prevalence of Syncytiotrophoblastic knots (P < 0.001) and placental necrosis (P = 0.048) than normal group. However, the mean weight of the placenta (P < 0.001), the length and width of the macroscopic placenta changes was less (P < 0.001).   Conclusion: The results of the current study showed that a major part of the macroscopic and histological changes are detectable in the intrauterine growth restriction samples, which are considerably more common than normal, although they are not pathognomonic, but in the future, more accurate results can be obtained from more extensive studies.

scholarly journals ASSESSMENT OF JAW BONE DENSITY IN TERMS OF HOUNSFIELD UNITS USING CONE BEAM COMPUTED TOMOGRAPHY FOR DENTAL IMPLANT TREATMENT PLANNING

2021 ◽  
Vol 71 (1) ◽  
pp. 221-27
Author(s):  
Myra Ahmad ◽  
Yasir Ikram Ahmed ◽  
Farheen Qureshi ◽  
Muhammad Sharjeel Ashraf ◽  
Zubair Ahmed Khan ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Bone Density ◽  
Treatment Planning ◽  
Cone Beam Computed Tomography ◽  
Cone Beam ◽  
Hounsfield Units ◽  
Implant Placement ◽  
The Mean ◽  
Anterior Mandible ◽  
Implant Treatment

Objective: To assess jawbone density in terms of Hounsfield units using cone beam computed tomography fordental implant treatment planning in patients reporting to a local tertiary care dental hospital Study Design: Cross sectional study. Place and Duration of Study: Department of Periodontology and Oral Implantology, Fatima Memorial Hospital, Lahore, from Mar to Sep 2018. Methodology: A total of 100 patients who fulfilled the inclusion criteria and underwent implant placement wereincluded in the study. After ethical approval, informed and written consent, brief history was taken and a singleradiographer exposed and took cone beam computed tomography scan of all the subjects using PLANMECAmachine. A single investigator using PLANMECA software recorded jawbone density in terms of Hounsfieldunits. All data were presented as mean, SD and one way ANOVA was used. Multiple comparisons of the fourregions in the maxilla and mandible were performed with a Tukey test. An independent t-test was also used tocompare gender with age groups and bone density. Results: Total of 100 patients who underwent implant placement were included, 48 (48%) were males & 52 (52%) were females with the mean age of 28.53 ± 5.33 years. The mean jawbone density in terms of Hounsfield units using cone beam computed tomography in anterior maxilla was 709.75 ± 122.63 Hounsfield units, posterior maxilla was 299.66 ± 73.09 Hounsfield units, anterior mandible was 1093.34 ± 109.42 Hounsfield units and posterior mandible was 599.45 ± 135.55 Hounsfield units (p<.001). Conclusion: The anterior mandible and anterior...........

scholarly journals Cone Beam Computed Tomography Study on the Incidence of Endodontic Filling Biomaterials Resorption in Patients With/Without Orthodontic Treatment

2021 ◽  
Vol 6 (2) ◽  
pp. 103-107
Author(s):  
Eugen Bud ◽  
Mariana Păcurar ◽  
Alexandru Vlasa ◽  
Cristina Bica ◽  
Krisztina Martha ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Orthodontic Treatment ◽  
Periodontal Diseases ◽  
Correct Diagnosis ◽  
Cone Beam ◽  
Total Length ◽  
Lower Jaw ◽  
Starting Point ◽  
Study Population ◽  
The Mean

Abstract Background: The differential diagnosis of endodontic and periodontal diseases can sometimes be clinically difficult, but it is vital to establish a correct diagnosis so that predictable treatment can be offered. Aim: The aim of this study was to highlight the prevalence of endo-periodontal lesions in the frontal dental group of the lower jaw depending on the degree of bone resorption as well as endodontic filling resorption in different patients, some of them with orthodontic treatment, using conical beam computed tomography (CBCT). Materials and methods: A number of 31 CBCT imaging volumes and the medical records of these patients were selected for analysis by an experienced examiner. The sites selected for analysis were divided into two subgroups, one where the endodontic treatment was performed with Endomethasone™ (Colthene, Creteil, France) (7 patients), and the other where it was performed with Adseal™ (Meta Biomed, Seoul, South Korea) (6 patients). Results: The mean age of the study population was 24.1 years, and 35.8% presented previous orthodontic treatment in their medical history. There were no statistically significant differences (p = 0.54) between groups regarding the length of the endodontic filling, the Endomethasone group showing a total length of 11.24 millimeters while the Adseal group showed a total length of 10.85 millimeters. Conclusions: The image obtained in clinical situations in which patients present combined endodontic-periodontal lesions is of real help because in many cases, with the help of CBCT, the starting point of a combined lesion can be highlighted, whether it is endodontic or periodontal.

scholarly journals DETERMINATION OF THE COMBINED WIDTH OF MAXILLARY ANTERIOR TEETH USING INNERCANTHAL DISTANCE WITH RESPECT TO AGE GENDER AND ETHINICITY

2021 ◽  
Vol 71 (Suppl-1) ◽  
pp. S164-69
Author(s):  
Naseer Ahmed ◽  
Maria Shakoor Abbasi ◽  
Danish Azeem Khan ◽  
Shiza Khalid ◽  
Warda Jawed ◽  
...  
Keyword(s):  
Cross Sectional Study ◽  
Gender Disparities ◽  
Sectional Study ◽  
Weak Correlation ◽  
Cross Sectional ◽  
Anterior Teeth ◽  
Significant Difference ◽  
The Mean ◽  
The Relationship

Objective: To evaluate the relationship between inner canthal distance and maxillary anterior teeth width withrespect to age, gender and ethnicity. Study Design: Cross sectional study. Place and Duration of Study: Altamash Institute of Dental Medicine, Karachi, from Aug 2019 to Jan 2020. Methodology: One hundred participants from both genders with full permanent dentition, no interdental space or pathology and facial symmetry were included in this study. The measurements were carried out with digital Vernier caliper. SPSS-25 was used for statistical analysis. Results: The mean ± SD of inner canthal distance and width of maxillary anterior teeth were 2.99cm ± 0.46and 3.82cm ± 0.35 respectively. A significant difference was found between gender (p=0.037) and inner canthaldistance. The maxillary anterior teeth width and inner canthal distance varies amongst different ethnicities(p=0.01). The inner canthal distance does not vary with advancing age (p=0.87) whereas width of maxillaryanterior teeth varies (p=0.04). A weak correlation value of 0.47 was found between inner canthal distance andmaxillary anterior teeth width. Conclusion: This research suggests that there is a weak relationship between inner canthal distance and maxillary anterior teeth width. Therefore, a multiplication ratio of 1.27 is advised to get combined mesiodistal width of maxillary anterior teeth. Additionally, the value of both differs in various local ethnicities. Inner canthal distance does not vary with age though has significant gender disparities while maxillary anterior teeth width remains constant.

scholarly journals Vascular and neurosensory evaluation in relation to lingual canal anatomy after mandibular midline implant installation in edentulous patients

2022 ◽  
Author(s):  
Mohamed Sad Chaar ◽  
Amr Ahmed Naguib ◽  
Ahmed Mohamed Abd Alsamad ◽  
Dina Fahim Ahmed ◽  
Nouran Abdel Nabi ◽  
...  
Keyword(s):  
Cone Beam ◽  
Vascular Changes ◽  
Anatomic Landmarks ◽  
Implant Placement ◽  
Patient Reported ◽  
Edentulous Patients ◽  
The Relationship ◽  
Implant Length ◽  
Bone Height ◽  
Tomography Scan

Abstract Objectives The aim of this study is to investigate vascular and neurosensory complications in edentulous patients following the installation of mandibular midline single implants in relation to lingual canals. Materials and methods After performing a cone beam computed tomography scan for the 50 recruited patients, the relationship between the potential implant site and the lingual canals was assessed, and all vascular and neurosensory complications were recorded. Results Six patients (12%) reported profuse bleeding during implant placement, and 13 (26%) reported transient neurosensory changes, which were resolved after 3 months. According to the virtual implant planning, 44 patients (88%) would have their implants touching the lingual canals, six of them reported vascular changes (14%), and 12 out of 44 patients reported neurosensory changes (27%). For the six patients who would have their implants not touching the lingual canals, one patient reported transient neurosensory changes. Conclusions The mandibular lingual canals are constant anatomic landmarks. Injury to the supra-spinosum lingual canals may occur during midline implant placement, depending on the implant length and the bone height. Clinical relevance Despite that injury to the supra-spinosum lingual canals during implant insertion does not result in permanent vascular or neurosensory complications, caution is required to avoid the perforation of the lingual cortices.

Morphological Changes of The Root Apex In Anterior Teeth With Periapical Periodontitis: An In-Vivo Study

2021 ◽  
Author(s):  
Chen-chen Zhang ◽  
Ya-jing Liu ◽  
Wei-dong Yang ◽  
Qian-nan Zhang ◽  
Ming-zhu Zha ◽  
...  
Keyword(s):  
Morphological Changes ◽  
Root Apex ◽  
Cone Beam ◽  
Reconstruction Technique ◽  
Apical Constriction ◽  
Anterior Teeth ◽  
The Mean ◽  
The Difference ◽  
Periapical Periodontitis

Abstract Introduction: The aim was to analyze the morphological changes of root apex in anterior teeth with periapical periodontitis. Methods: 32 untreated anterior teeth with periapical periodontitis were enrolled, compared with the healthy contralateral teeth. Cone-beam computed tomography was used to measure diameter of the apical constriction. 3D reconstruction technique was used to reconstruct the teeth, analysis the constriction forms, and measure the distances of constriction to apical foramen and anatomical apex respectively. Results: The difference value between buccolingual and mesiodistal diameter was (0.06±0.09) mm in periapical periodontitis and (0.04±0.04) mm in healthy teeth (p<0.05). The mean distances between apical constriction and anatomical apex were (0.97±0.25) mm and (1.59±0.48) mm in periapical periodontitis and healthy teeth. The mean distances of apical constriction to apical foramen were (0.39±0.12) mm and (0.70±0.18) mm in periapical periodontitis and healthy teeth. The most common form of apical construction was flaring (65.6%) in periapical periodontitis. Conclusions: The anterior teeth with periapical periodontitis had shorter distances of apical constriction to anatomical apex and apical foramen, bigger disparities between the diameters of buccolingual and mesiodistal, and higher proportion of flaring apical construction.

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