Examinando por Autor "Gold Semmler, Marjorie"

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    Anatomical variations of the mandibular canal and their clinical implications in dental practice: a literature review
    (Springer Nature, 2021-02-25) Valenzuela Fuenzalida, Juan José; Cariseo-Ávila, Carolina; Gold Semmler, Marjorie; Díaz, D.; Orellana-Donoso, Mathias; Iwanaga, Joe
    Introduction The anatomical variations of the mandibular canal have been described according to the number of additional branches it presents, bifid and trifid. Within the bifids we can also find subtypes of variations such as the retromolar man- dibular canal. These anatomical variations can have important clinical implications for the work of dental professionals. Methods A systematic search of the literature was carried out in different databases that met the following criteria: articles published between 2000 and 2020, and articles that established a clinical correlation with variations in the mandibular canal. Results After applying inclusion and exclusion criteria, 32 articles were obtained, in which the variations of the mandibular canal were identified, their prevalence and incidence, which was very varied between the different articles, it was also found that the CBCT was the main technique to identify the anatomical variations of the mandibular canal. Lastly, the anatomical variations of the mandibular canal have a direct clinical correlation with pre-surgical, intra-surgical and postsurgical com- plications in pathologies that require surgical intervention. Conclusions The anatomical variations of the mandibular canal have a high incidence, so knowing them is of vital impor- tance both for clinicians and anatomy professors who provide morphological training. We believe that research should focus on describing and diagnosing the causes of these anatomical variations. That said, there is also a continuous challenge for all health professionals to learn about the different anatomical variations that the human body presents and how these can affect clinical practice.
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    Systematic review and meta-analysis of right subclavian artery variants and their correlation with cervical-thoracic clinical conditions
    (Wolkers Kluwer Health, 2024-12-13) Valenzuela Fuenzalida, Juan José; Orellana-Donoso, Mathias; Perez-Jiménez, Daniela; Farfán Cabello, Emilo; Gold Semmler, Marjorie; Becerra Farfán, Álvaro; Román, Camila; Nova Baeza, Pablo
    Background: A high incidence of anatomical variations in the origin of the branches of the aortic arch has been reported, Nowadays, this variation is considered the most frequent in the aortic arch, its prevalence being estimated between 0.5% and 2.5% of the population. To understand its origin, knowledge of embryonic development is necessary. Methods: We searched the MEDLINE, Scopus, Web of Science, Google Scholar, Cumulative Index to Nursing and Allied Health Literature, and Latin-American literature and caribean of health sciences databases with dates ranging from their inception to June 2023. Study selection, data extraction, and methodological quality were assessed with the guaranteed tool for anatomical studies (Anatomical Quality Assurance). Finally, the pooled prevalence was estimated using a random effects model. Results: Thirty-nine studies were found that met the eligibility criteria. Twenty studies with a total of 41,178 subjects were included in the analysis. The overall prevalence of an ARSA variant was 1% (95% confidence interval = 1%–2%), the clinical findings found are that if ARSA is symptomatic it could produce changes in the hemodynamic function of the thoracocervical region in addition to other associated symptomatic complications in surrounding structures. Conclusions: ARSA can cause several types of alterations in the cervical or thoracic region, resulting in various clinical complications, such as lusory dysphagia. Hence, knowing this variant is extremely important for surgeons, especially those who treat the cervico-thoracic region. The low prevalence of ARSA means that many professionals are completely unaware of its existence and possible course and origin. Therefore, this study provides detailed knowledge of ARSA so that professionals can make better diagnoses and treatment of ARSA.