scholarly journals Assessment of the relationship between the maxillary sinus and the canine root tip using cone beam computed tomography

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Leila Khojastepour ◽  
Najmeh Movahhedian ◽  
Mohadeseh Zolghadrpour ◽  
Mohammad Mahjoori-Ghasrodashti

Abstract Background The purpose of the present study is to investigate the relationship between the maxillary sinus and the canine root apices in cone beam computed tomographic images (CBCT) and to assess the amount of extension of the maxillary sinus to the anterior region of the jaw in different sexes and age groups. Methods CBCT of 300 individuals (154 males and 146 females) over 20 years (with a mean age of 35.12 ± 8.40 years) were evaluated. The subjects were categorized into three age groups (20–30, 30–40, and 40–50 years). When the maxillary sinus extended to the canine area, the vertical distance between them was measured, and their relationship was classified into three types: I (more than 2 mm distance), II (less than 2 mm distance or in-contact), and III (interlock). Results 413 out of 600 maxillary sinuses (68.8%) were extended into the canine area or beyond. Among them, 15 maxillary sinuses pneumatized into the incisor area (2.5%). The prevalence of the maxillary sinuses extended to the anterior region of the jaw was not significantly different between genders. However, it was significantly less frequent in the older age group and more frequent on the left side. In addition, the mean amount of anterior extension of the maxillary sinus (mm) was significantly lower in the older age group. Type I was the most frequent vertical relationship between the maxillary sinuses and canine apices with no significant difference in gender, side, and age groups. Conclusions In most cases, the maxillary sinus extended to the canine area and sometimes reached the incisor region. This necessitates paying more attention to the maxillary anterior sextant during surgical procedures.

2021 ◽  
Author(s):  
Leila Khojastepour ◽  
Najmeh Movahhedian ◽  
Mohadeseh Zolghadrpour

Abstract Background: The purpose of the present study is to investigate the frequency and amount of extension of the maxillary sinus to the anterior region and to evaluate the vertical distance between the maxillary sinus floor and canine apices.Methods: Cone beam computed tomographic images of 300 individuals (154 males and 146 females) over 20 years (with mean age of 35.12 ± 8.40 years) were evaluated. The subjects were categorized into three age groups (20-30, 30-40 and 40-50 years). When maxillary sinus extended to the canine area, the vertical distance between them were recorded and their relationship were classified into three types: I (> 2 mm distance), II (2 mm < distance or in-contact) and III (interlock). Results: 413 out of 600 maxillary sinuses (68.8%) were extended into the canine area or beyond. Among them, 15 maxillary sinuses pneumatized into the incisor area (2.5%). The prevalence of the maxillary sinuses extended to the anterior region of the jaw was not significantly different between genders, but it was significantly less frequent in older age group and more frequent in the left side. The mean amount of anterior extension of maxillary sinus (mm) was significantly lower in older age group. Type I was the most frequent vertical relationship between the maxillary sinuses and canine apices with no significant difference in gender, side and age groups.Conclusions: Most of the maxillary sinuses extended to the canine area. Maxillary sinus extended into incisor area with the frequency of 2.5% . The amount of extension of the maxillary sinus to the anterior region and its vertical distance with canine apices decreased in older age group.


2020 ◽  
Vol 8 (6) ◽  
pp. 232596712092793
Author(s):  
Christopher Antonacci ◽  
Thomas R. Atlee ◽  
Peter N. Chalmers ◽  
Christopher Hadley ◽  
Meghan E. Bishop ◽  
...  

Background: Pitching velocity is one of the most important metrics used to evaluate a baseball pitcher’s effectiveness. The relationship between age and pitching velocity after a lighter ball baseball training program has not been determined. Purpose/Hypothesis: The purpose of this study was to examine the relationship between age and pitching velocity after a lighter ball baseball training program. We hypothesized that pitching velocity would significantly increase in all adolescent age groups after a lighter baseball training program, without a significant difference in magnitude of increase based on age. Study Design: Cohort study; Level of evidence, 2. Methods: Baseball pitchers aged 10 to 17 years who completed a 15-week training program focused on pitching mechanics and velocity improvement were included in this study. Pitchers were split into 3 groups based on age (group 1, 10-12 years; group 2, 13-14 years; group 3, 15-17 years), and each group trained independently. Pitch velocity was assessed at 4 time points (sessions 3, 10, 17, and 25). Mean, maximum, and mean change in pitch velocity between sessions were compared by age group. Results: A total of 32 male baseball pitchers were included in the analysis. Mean/maximum velocity increased in all 3 age groups: 3.4/4.8 mph in group 1, 5.3/5.5 mph in group 2, and 5.3/5.2 mph in group 3. While mean percentage change in pitch velocity increased in all 3 age groups (group 1, 6.5%; group 2, 8.3%; group 3, 7.6%), the magnitude of change was not significantly different among age groups. Program session number had a significant effect on mean and maximum velocity, with higher mean and maximum velocity seen at later sessions in the training program ( P = .018). There was no interaction between age and program session within either mean or maximum velocity ( P = .316 and .572, respectively). Conclusion: Age had no significant effect on the magnitude of increase in maximum or mean baseball pitch velocity during a velocity and mechanics training program in adolescent males.


2013 ◽  
Vol 35 (4) ◽  
pp. E4 ◽  
Author(s):  
Daniel E. Couture ◽  
John C. Crantford ◽  
Aravind Somasundaram ◽  
Claire Sanger ◽  
Anne E. Argenta ◽  
...  

Object There has been a tremendous increase in the incidence of deformational plagiocephaly in children throughout the world. Therapeutic options include observation, active counterpositioning, external orthotics, and surgery. The current treatment in the US is highly debated, but it typically includes external orthotic helmets in patients with moderate to severe plagiocephaly presenting between 4 and 10 months of age or in children with significant comorbidities limiting passive (no-pressure) therapy. The present study was designed to evaluate 3 key issues: 1) the accuracy of the Argenta classification in defining a progressive degree of severity, 2) identification of an upper age limit when treatment is no longer effective, and 3) the effectiveness of an off-the-shelf prefabricated helmet in correcting deformational plagiocephaly. Methods An institutional review board–approved retrospective study was conducted of all patients at the authors' clinic in whom deformational plagiocephaly was assessed using the Argenta classification system over a 6-year period; the patients underwent helmet therapy, and a minimum of 3 clinic visits were recorded. Inclusion criteria consisted of an Argenta Type II–V plagiocephalic deformity. Patients' conditions were categorized both by severity of the deformity and by patients' age at presentation. Statistical analysis was conducted using survival analysis. Results There were 1050 patients included in the study. Patients with Type III, IV, and V plagiocephaly required progressively longer for deformity correction to be achieved than patients with Type II plagiocephaly (53%, 75%, and 81% longer, respectively [p < 0.0001]). This finding verified that the Argenta stratification indicated a progressive severity of deformity. No statistically significant difference in the time to correction was noted among the different age categories, which suggests that the previously held upper time limit for correction may be inaccurate. An overall correction rate to Type I plagiocephaly of 81.6% was achieved irrespective of severity and degree of the original deformity. This suggests that an inexpensive off-the-shelf molding helmet is highly effective and that expensive custom-fitted orthoses may not be necessary. The patients in the older age group (> 12 months) did not have a statistically significant longer interval to correction than the patients in the youngest age group (< 3 months). The mean length of follow-up was 6.3 months. Conclusions Patients treated with passive helmet therapy in the older age group (> 12 months) had an improvement in skull shape within the same treatment interval as the patients in the younger age group (< 3 months). This study supports the use of passive helmet therapy for improvement in deformational plagiocephaly in infants from birth to 18 months of age and verifies the stratification of degree of deformity used in the Argenta classification system.


2021 ◽  
Vol 9 (A) ◽  
pp. 1117-1122
Author(s):  
Sherif Shafik El-Bahnasy ◽  
Magdy Youakim ◽  
Mohamed Shamel ◽  
Hisham El Sheikh

AIM: The purpose of the study was to measure and compare the prevalence of mandibular canal (MC) location variations in regard to mandibular first molars in both genders at different age groups. METHODS: A retrospective study was performed on 80 cone-beam computed tomography scans. Distance between MC and apical apices of first molars, buccal and lingual cortical plates was measured in both sides. RESULTS: 80 scans with 160 sides were analyzed. Distances was measured bilaterally for all scans with mean (5.22 ± 0.77) in men versus (4.1 ± 0.7) in women at group age 31–40 apical to apices of first molars. The mean was (3.77 ± 0.62) in men versus (2.81 ± 0.47) in women at same age group at buccal side, lingually the mean was (4.02 ± 0.67) in men versus (3.67 ± 0.26) in women in the same age group. CONCLUSION: Our study showed that there were decrease in measurements in older age group in both genders and in female groups more than male groups but with no statistical significant difference.


2021 ◽  
Vol 11 (8) ◽  
Author(s):  
M. Cherkes ◽  
V. Student ◽  
Z. Masna ◽  
K. Ivasivka ◽  
Kh. Rudnytska

The maxillary sinuses diseases are an actual clinical problem today. The aim of our study was to determine the frequency of pathology of the maxillary sinuses of different origin and its age dynamics in adults. 500 series of anonymized tomograms of adults were analyzed: 22-35 years (1st group) and 36-60 years (2nd group in men) and 36-55 years (2nd group in women). Cone-beam computed tomography (CT) of the nose, paranasal sinuses, and upper jaw was performed on a Point 3D Combi 500 cone-beam tomograph. RealScan software was used to analyze the test results. The results of the study showed that among the adults who applied for examination of the maxillary sinus, only 20% had no pathology. Patients of the first age group are most often diagnosed with pathological changes of the maxillary sinus, which have a rhinogenic origin. In persons of the second age group, regardless of gender, the pathology of the maxillary sinus of odontogenic origin is most often diagnosed. With age, the number of pathologies of odontogenic origin increase both in men and in women, and the number of pathologies of other origin, including rhinogenic - decreases.


Author(s):  
Shaojung Sharon Wang

This study investigated how Pokémon GO play may integrate players' gaming experiences and physical environments to facilitate spatial-human immersions in psychologically meaningful ways. Two age groups that represent generational players were further compared. A survey of 1031 players found that co-presence was positively associated with game enjoyment and game involvement, and nostalgia was positively associated with game enjoyment. The mediation effect of nostalgia on game involvement through game enjoyment was significant and game involvement completely mediated the relationship between game enjoyment and place attachment. In the 35 years and older age group, the direct effect of nostalgia on game involvement and the indirect effect of nostalgia on game involvement through game enjoyment were both significant. Theoretical implications on linking spatial relationships and the process of movement in the immersive AR environment and connecting the media experiences from one's formative youth period to the world of technological advances are elaborated.


2012 ◽  
Vol 30 (4_suppl) ◽  
pp. 512-512 ◽  
Author(s):  
Efrat Dotan ◽  
Emmanuelle Nicolas ◽  
Karthik Devarajan ◽  
Robert J Beck ◽  
Steven J. Cohen

512 Background: Telomere length (TL) is associated with aging as well as high cancer incidence. We conducted a pilot study to assess the TL of younger versus older (≥70 years) patients with CRC and its effect on survival. Methods: QPCR was used to analyze the relationship between telomere repeat copy number and single gene copy number (T/S ratio) on peripheral blood lymphocytes DNA of 94 CRC patients, and used as a surrogate value for relative TL. The primary aim of the study was to evaluate differences in TL between different age groups. Correlation with overall survival (OS) was the secondary aim. Samples were run in triplicate, and a standard curve was used to calculate the relative T/S ratio and account for plate to plate variability. Univariate statistical analyses were performed using the Mann-Whitney test for continuous variables and the log-rank test for OS. Multivariable analyses were performed using the Classification and Regression Trees methodology. A Type I error of 5% was used to determine statistical significance. Results: The mean relative TL was 0.95 (range 0.64-1.84). The assay demonstrated high correlation of technical replicates between plates (Pearson correlation: 0.96 and 0.81, for sample and control). Comparing patient under and over 70 years of age revealed a borderline significant difference in TL between the groups (mean TL 0.981 versus 0.925 respectively; p=0.067). Assessment using 4 age groups (50-60, 60-70, 70-80, >80) demonstrated a statistically significant difference in TL between the youngest and the oldest age groups (mean TL 1.022 versus 0.874 respectively; p=0.02) with evidence of shorter TL with advanced age. Marginal relationship was seen between OS and age (p-value=0.066) with older patients exhibiting slightly poorer survival (hazard ratio of 1.03, 95% confidence interval (0.998, 1.065)). No correlation was noted between relative TL and OS in univariate and multivariable analysis. Conclusions: These results validate the ability of a qPCR-based assay to differentiate between younger and older CRC patients by TL. Ongoing studies are utilizing this methodology to evaluate the relationship of TL to treatment tolerance in elderly CRC patients.


Blood ◽  
2021 ◽  
Vol 138 (Supplement 1) ◽  
pp. 1929-1929
Author(s):  
Olufunmilayo A Bamigbola ◽  
Lorna E Warwick

Abstract Background Lymphomas can occur in all age groups but most commonly occur in older adults. Despite the shift towards patient- centered care, very little has been done to explore the information needs of patients with lymphoma by age. It is important for information to accessible to patients of all ages, as informed patients are consistently associated with better outcomes and healthcare experiences. In this study, Lymphoma Coalition (LC) describes the age-related differences in the information needs of patients with lymphoma using the 2020 LC Global Patient Survey (GPS). The objectives of this study were to identify: 1) how patients felt about the amount of information they received at diagnosis 2) the content of the information received at diagnosis and the level of understanding, and 3) their informational needs. Methods Globally, 11,878 respondents including 9,179 patients and 2,699 caregivers took part in the 2020 LC GPS. There were 9,078 patients included in this analysis who self-identified their age. These patients were grouped into five age groups for analysis: 18-29 (n=638), 30-39 (n=1,196), 40-59 (n=3,261), 60-69 (n=2,216), and 70+ (n=1,767). Demographics of the five age groups were examined, and descriptive analyses for all questions relating to information needs were performed in IBM SPSS v27. Results The five age groups differed significantly (p&lt; 0.001) in all the demographic categories examined. These categories included lymphoma subtype, sex, area of residence, education level, employment status, and household status. Patients were asked how they felt about the amount of information given to them at diagnosis. The oldest age group (70+) reported the highest prevalence (70%) of having received the right amount of information (Table 1). The younger age groups (18-29; 30-39; and 40-59) reported the highest prevalence of not receiving enough information (38%, 42%, and 41% respectively). Although not many patients reported being given too much information, of those who did, the younger age groups (18-29; 30-39; and 40-59) were the most prevalent (10%; 7%; and 5% respectively) (Table 1). Patients were asked about the type of information given to them at diagnosis, and how well they understood it. Compared to the younger age groups, the older age groups (60-69 and 70+) more frequently reported that they received and understood information given to them on different medical treatment options, the process and stages of their care, and how to manage side effects of treatment (Table 1). Patients were also asked what they needed more information about (Table 1). The top three areas that all patients needed more information about (regardless of age group) were treatment options, side effects from treatment, and their diagnosis and what it means. There was significant difference in the prevalence of how these information needs were reported between the age groups (Table 1). There was also significant difference in the prevalence of reporting a need for more information on support for self care, psychological support/counselling, and fertility across the age categories (Table 1). The lowest prevalence for needing more information in any of these areas was observed in the older age groups (60-69 and 70+), while the highest prevalence was observed in the youngest age groups (18-29 and 30-39) (Table 1). Although few patients reported not needing more information in any of these areas, its reporting was most prevalent in the older age groups (60-69 and 70+) (12% and 19%, respectively) (Table 1). Summary/Conclusions This analysis revealed that patients with lymphoma/CLL experience medical information differently across age groups. Compared to the mid and oldest patient groups, younger patients with lymphoma or CLL reported experiencing medical information differently than older patients do and reported less understanding of the medical information given to them. The younger patients also reported higher informational needs about their disease and treatment that may also be related to their age (e.g. information on fertility and family support). Clinicians should note these differences in age-group experiences and information needs, with the understanding that younger patients with lymphoma or CLL may require additional information, attention, and support. In the future, LC would like to explore how demographic differences may have confounded results. Figure 1 Figure 1. Disclosures No relevant conflicts of interest to declare.


2020 ◽  
Vol 10 (2) ◽  
pp. 30-35
Author(s):  
Mustafa Yalçın ◽  
Nihat Laçin

Purpose: The aim of this study was to evaluate the prevalence of antral pseudocysts(AP), maxillary sinus septas(MSS) and the relationship between AP and MSS by using cone-beam computed tomography(CBCT).Methodology: The CBCT scans of 466 patients (237 male, 229 female ranging in age between 13 and 83) were included in our study. The presence or absence of AP and MSS were confirmed at axial, sagittal, and coronal sections of CBCT images by considering gender and localization. For statistical analysis, Pearson chi-square and Spearman correlation tests were used.Results: One hundred-ninety eight out of 466 (42.49%) patients had AP in the right and left maxillary sinus. There was a significant difference in the prevalence of AP between men and women (p≤0.001). The prevalence of AP was higher in men than in women. Twenty-eight out of 237 patients in men(11.81%) and 35 out of 229 patients in women(15.28%) had MSS in the right and left maxillary sinus. Conclusion: The prevalence of AP and MSS was 42.49% and 13.52%, respectively and the prevalence of MSS was lower in our study than other studies. We did not determine the relationship between AP and MSS in the maxillary sinuses.   How to cite this article: Yalçın M, Laçin N. Evaluation of the antral pseudocysts and maxillary sinus septas by using cone-beam computed tomography. Int Dent Res 2020;10(2):30-35. https://doi.org/10.5577/intdentres.2020.vol10.no2.1   Linguistic Revision: The English in this manuscript has been checked by at least two professional editors, both native speakers of English.


2021 ◽  
Author(s):  
Apatsa Lekskul ◽  
Tunyarat Tangphikunatam ◽  
Phantaraporn Tangtammaruk

Abstract Purpose: To evaluate postoperative corneal astigmatism changes after ptosis correction in groups of young and older patients with congenital ptosis.Patients and Methods: A prospective cohort study of 28 patients (56 eyes) with congenital ptosis enrolled at Ramathibodi Hospital was performed from April 2018 to June 2019. Within this group of patients there were 6 cases of bilateral congenital ptosis and 22 unilateral cases of congenital ptosis forming a total of 34 individual ptotic eyes for the study. The patients were categorized into two groups: early-age group (aged ≤5 years,) comprising of 14 eyes and older-age group (aged >5 years) comprising of 20 eyes. The preoperative visual acuity, amblyopic status, ptosis severity, and refractive error of both groups were evaluated prior to ptosis correction. All patients underwent ptosis correction with either levator resection or frontalis sling. Following the correction, the refractive error was measured after a follow-up period of at least 6 months. The astigmatism results were classified into three subgroups: with-the-rule, against-the-rule and oblique astigmatism.Results: The mean age at diagnosis was 8.91 ± 7.05 years. From the study group, amblyopia was found in 13 out of 28 patients (46.4%). The most common type of astigmatism was with-the-rule astigmatism, making up 24 out of 34 ptotic eyes (70.6%). A postoperative astigmatism change of >0.50 diopters was found in 4 out of14 eyes (28.6%) in the early-age group and in 6 out of 20 eyes (30.0%) in the older-age group (Rate ratio, 1.43; 95% CI, 0.34–6.07). Conclusion: Astigmatism was reduced following ptosis correction, with no statistically significant difference in the amount of reduction between the two age groups. As there is no significant difference, surgical correction can be deferred in patients of all age groups with anisometropic amblyogenic ptosis until appropriate surgical planning is possible.


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