Κυριακή 17 Απριλίου 2022

Open Reduction Internal Fixation of Mandibular Condylar Fractures: Factors Influencing Radiographic Anatomical Reduction

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Mandible fractures occur frequently, accounting for approximately 70% of all facial fractures. Of those, fractures of the mandibular condyle account for 25-35%.1,2 Over several decades, there has been much controversy over the standard treatment method for condylar fractures, with increasing support for open reduction internal fixation (ORIF). The aim of this study is to determine negative and positive factors that may influence radiographic reduction outcomes after ORIF of mandibular condylar fractures. (Source: Journal of Oral and Maxillofacial Surgery)
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Oral Rehabilitation of an Adult Cleft Palate Patient with Zygomatic Implant-supported Obturator Prosthesis: A Case Report

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

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

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

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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.

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

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Via Phonetica

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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...
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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

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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)
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