Αναζήτηση αυτού του ιστολογίου

Κυριακή 17 Απριλίου 2022

Oral Rehabilitation of an Adult Cleft Palate Patient with Zygomatic Implant-supported Obturator Prosthesis: A Case Report

alwin shared this article with you from Inoreader
With advancement in medical services and their accessibility across the country, as well as growing awareness among the patient population, it is rare to find an adult with an untreated cleft lip and/or palate nowadays. Treatment of these patients to restore form and function can be challenging, often yielding less-than-satisfactory outcomes. In current literature, there have been case reports of patients with atrophic maxilla or severe maxillary defects after oncologic resections, where zygomatic implants have been utilized for fabrication of a fixed maxillary prosthesis. (Source: Journal of Oral and Maxillofacial Surgery)
View on the web

Modified Lip Revision Surgery For The Severe Whistle Lip Deformity In Bilateral Cleft Lip

alwin shared this article with you from Inoreader
Whistle deformity is a sequela of primary surgical repair of the bilateral cleft lip that leads to a vertical tissue deficiency and a non-functional orbicularis oris muscle in the medial portion of the upper lip. This sequel is significantly limiting functionally and esthetically. We propose a complete labial revision with a secondary cheiloplasty of Mulliken and a submucosal inferiorly based flap in the central tubercle to increase the volume at this usually deficient area. (Source: Journal of Oral and Maxillofacial Surgery)
View on the web

Is inferior alveolar nerve block needed to perform implant surgery in the posterior mandible? A randomized controlled trial.

alwin shared this article with you from Inoreader
This study aimed to compare the efficacy of the 2 techniques using articaine 4% with epinephrine 1:100,000. (Source: Journal of Oral and Maxillofacial Surgery)
View on the web

Intraoperative flap warming: The novel use of a sterile cardiac forced warm air blanket for maintaining optimal flap perfusion.

alwin shared this article with you from Inoreader
The two-team approach in major head and neck/reconstructive surgery can occasionally lead to delays between flap harvest and detachment, due to the complexity and length of the ablative procedure. In order to minimize the potential for flap cooling and the adverse impact on microcirculation, active warming can be beneficial.(1) Intraoperative flap warming to either maintain or improve circulation during free flap harvesting has been performed with a variety of passive and active techniques,(2) however limitations such as a lack of consistent temperature regulation, lack of sterility, inability to directly visualise the flap or the need for acquisition of new equipment for a niche area meant that an ideal solution was lacking. (Source: Journal of Oral and Maxillofacial Surgery)
View on the web

Pseudoaneurysms after Le Fort I Osteotomy at a Single High-surgical-volume Institution

alwin shared this article with you from Inoreader
The Le Fort I maxillary osteotomy remains a workhorse surgical technique for addressing dentofacial deformities; however, significant complications can arise. One of the most serious complications is a pseudoaneurysm that results from injury to a terminal branch of the internal maxillary artery. The bleeding episodes normally develop 10 days to 4 weeks post-hospital discharge. Typically, these are minor sentinel bleeding preceding a hemorrhagic episode that results in an emergency room visit. While rare, significant morbidity has been reported, and bleeding can be rapid and in some instances mortal. (Source: Journal of Oral and Maxillofacial Surgery)
View on the web

Cellular fibroadenoma versus phyllodes tumors: A pre‐operative diagnostic approach based on radiological and cytological features

alwin shared this article with you from Inoreader

Abstract

Objective

This study has been designed in an effort to identify the clinico-radiological and cytological features that could effectively help in differentiating cellular fibroadenoma (CFA) and phyllodes tumors (PT), which have several overlapping characteristics.

Method

Histologically proven cases of CFA and PT were reviewed. Cytological features were assessed and categorized. Clinical and radiological details were also evaluated and he the two groups were compared statistically.

Results

A total of 43 FA and 52 PT were specimens were reviewed. Mean age and tumor size for CFA and PT were 26.05 and 36.94 years, and 3.7 and 6.4 cm, respectively. Univariate analysis and regression models revealed that age >30 years, BIRADS grade of 4 or more, marked cellularity of stromal fragments, more than 30% spindle cells in background cell population and presence of traversing blood vessels in stromal fragments increased the odds of a tumor being phyllodes. The binary logistic regression model was able to predict PT accurately in 87.2% cases (p <  .001).

Conclusion

PT and CFA could be differentiated if cytological findings are cautiously correlated clinically and radiologically. Age, BIRADS category along with assessment of stromal fragments and background population can effectively distinguish between CFA and PT.

View on the web

Training the pronunciation of L2 vowels under different conditions: the use of non-lexical materials and masking noise

alwin shared this article with you from Inoreader
Via Phonetica

fbworm.png

Phonetica. 2022 Apr 15. doi: 10.1515/phon-2022-2018. Online ahead of print.ABSTRACTThe current study extends traditional perceptual high-variability phonetic training (HVPT) in a foreign language learning context by implementing a comprehensive training paradigm that combines perception (discrimination and identification) and production (immediate repetition) training tasks and by exploring two potentially enhancing training conditions: the use of non-lexical training stimuli and the presence of masking noise during production training. We assessed training effects on L1-Spanish/Catalan bilingual EFL learners' production of a difficult English vowel contrast (/æ/-/ʌ/). The participants (N = 62) were randomly assigned to either non-lexical (N = 24) or lexical (N = 24) training and were fu...
View on the web

Πέμπτη 14 Απριλίου 2022

Augmentation of the width and thickness of keratinised gingiva using a collagen biomaterial in apically positioned flap surgery: A technical note

alwin shared this article with you from Inoreader
To ensure that dental implants remain functional in the long-term, adequate thickness and width of keratinised tissue at the cervical collars are essential.1 Once a tooth is lost, the height of the alveolar bone is reduced, and the keratinised tissue of the edentulous area recedes.2 There are two techniques currently used to obtain the desired keratinised tissue augmentation: the apically positioned flap surgery and the free gingival graft surgery.2 The apically positioned flap surgery, the existing keratinised tissue is incised at the mucosal or mucoperiosteal flap to enable natural extension of the incised end. (Source: The British Journal of Oral and Maxillofacial Surgery)
View on the web

Superficial parotidectomy with or without great auricular nerve preservation. Is there a difference in postoperative sensory recovery rates and quality of life?

alwin shared this article with you from Inoreader
This study aimed to compare sensory recovery rates and quality of life (QoL) in patients who had undergone superficial parotidectomy and had their GAN preserved or sacrificed. Fifty patients were prospectively analysed, 28 with the GAN preserved, and 22 with it sacrificed. The primary outcomes were tactile sensitivity and QoL. The secondary outcomes were operating times and other complications. (Source: The British Journal of Oral and Maxillofacial Surgery)
View on the web

Long-term clinical outcomes of immediate loading versus non-immediate loading in single-implant restorations: a systematic review and meta-analysis

alwin shared this article with you from Inoreader
Dental implant restoration is a predictable treatment option for replacing missing or damaged teeth. Conventional loading requires a prolonged treatment period and second surgical interventions. The aim of this study was to compare the clinical outcomes between immediate and non-immediate (early or conventional) loading in single-implant restorations. A literature search of the PubMed, Embase, Cochrane Library, Web of Science, and ClinicalTrials.gov databases was performed in January 2020. Only randomized clinical trials (RCTs) were included. (Source: International Journal of Oral and Maxillofacial Surgery)
View on the web

Poor Treatment Outcomes with Second-Line Chemotherapy in Advanced Synovial Sarcoma

alwin shared this article with you from Inoreader
Via Oncology
CONCLUSION: Our exploratory study revealed that the response rate of second-line chemotherapy regimens for patients with synovial sarcoma was 9.4%. Therefore, there is an urgent need to develop more active therapeutic regimens for synovial sarcomas.PMID:35405680 | DOI:10.1159/000524500 (Source: Oncology)
View on the web

SEARCH FOR EXPERIMENTAL EVIDENCE OF DOSE-RATE AND WALL SCATTERING EFFECTS IN THE THERMOLUMINESCENCE RESPONSE OF LIF:MG,TI (TLD-100)

alwin shared this article with you from Inoreader
Abstract
An experimental investigation into the possibility of dose-rate effects and wall scatter in the thermoluminescent response of LiF:Mg,Ti (TLD-100) was carried out. The investigation was motivated by theoretical simulations predicting the possible presence of dose-rate effects coupled with the lack of detailed experimental studies. The dose rate was varied by changing the source to sample distance, by the use of attenuators, sources of 137Cs of various activities, filtration and the construction of identical geometrical irradiators of Teflon and stainless steel. Four levels of dose in the linear dose response region were studied at 10−2 Gy, 1.5 × 10−2 Gy, 0.1 Gy and 0.5 Gy to avoid complications in interpretation due to supralinearity above 1 Gy. At the dose of 1.5 × 10−2 Gy, the dose rate was varied by five orders of magnitude from 4.9 × 10−3 Gy s−1 to 4.9 × 10− 8 Gy s−1. At the other levels of dose, a one to two orders of magnitude in dose rate was achieved. Within the measurement uncertainty of 5–10%, no dose-rate effects were observed in any of the experimental measurements and no changes in the shape of the glow curve were observed. The maximum wall scatter effect (Teflon to stainless steel) was measured at ~8% within the experimental uncertainty and well below expectations. The results are encouraging with respect to the accurate and reproducible use of LiF:Mg,Ti under various experimental conditions of irradiation.
View on the web

THE INFLUENCE OF LOW-DOSE OCCUPATIONAL RADIATION EXPOSURE ON PERIPHERAL BLOOD CELLS IN A COHORT OF CHINESE MEDICAL RADIATION WORKERS

alwin shared this article with you from Inoreader
Abstract
Objectives
The study aims to assess the change of peripheral blood cell numbers following protracted low-dose radiation exposure among medical radiation workers.
Methods
A cohort of 375 Chinese medical workers were followed for 5 years (2015–19) and recorded the changes in blood cells and cumulative doses. T-test, least significant difference-T test, variance analysis and correlation analysis were utilized in this study.
Results
Compared with the control group, the white blood cells, hemoglobin counts and the ratio of eosinophils in the study group showed a downward trend. The differences in blood cells between groups were mainly found in the number of red blood cells. In a short cumulative time, such as 1 or 3 years, a correlation between the cumulative dose and the quantity of blood cells was detected, but not at 5 years.
Conclusions
There is no significant difference in the blood cell count s between different types of work, and the long-term cumulative dose has not been statistically correlated with the number of blood cells. So that the number of peripheral blood cells can no longer be used as a good indicator of radiation damage.
View on the web