China
Africa
Explore chapters and articles related to this topic
Dorsum Surgery
Published in Suleyman Tas, Rhinoplasty in Practice, 2022
The examination of the relationship between both maxillas is crucial to diagnose maxillary hypoplasia. Asymmetries in this plane can affect the frontal appearance as alar base retractions or rim asymmetries [51–52].
Facial anatomy
Published in Michael Parker, Charlie James, Fundamentals for Cosmetic Practice, 2022
The maxillae are the bones which form the medial aspect of the cheek (Figure 3.4), positioned between the nasal bone and zygoma. They have three primary functions: Allowing a point of anchor for the upper teeth in the alveolar processForming the floor and lateral wall of the nasal cavityForming part of the medial wall of the orbit The point of fusion of the maxillae is at the midline immediately inferior to the nose at the intermaxillary suture. Aside from structural support, the maxillae contain sinuses which are important in both altering the depth of voice as well as keeping decreasing the weight of the facial bones. The maxilla is also the site of the infra-orbital foramen, which is located just below the infraorbital margin of the orbit, at an average distance of 6–10 mm inferiorly in the midline. The infraorbital foramen is important in the transmission of the infraorbital artery, vein and nerve, and therefore, this region must be respected, especially in the context of dermal filler administration as it is at risk of avascular necrosis, filler embolisation and neuronal damage.
Anatomy of the head and neck
Published in Helen Whitwell, Christopher Milroy, Daniel du Plessis, Forensic Neuropathology, 2021
The maxillary sinuses are large pyramidal cavities within the maxillae. Their floor is formed by the alveolar part of the maxilla, with the roots of the maxillary teeth, particularly the first two molars, creating conical elevations (Figure 1.1).
Specific imaging findings in the course of sinus fungus ball progression to chronic invasive fungal rhinosinusitis
Published in Acta Oto-Laryngologica Case Reports, 2023
Tomotaka Hemmi, Kazuhiro Nomura, Mika Watanabe, Yuki Numano, Risako Kakuta, Mitsuru Sugawara
Thirteen days after the patient’s visit to our department, transnasal endoscopic sinus surgery was performed under general anesthesia. Endoscopic modified medial maxillectomy helped reach the lesion and secure the surgical field [6]. The maxillary sinus was filled with a gray, clay-like material compatible with a fungus ball, and Aspergillus fumigatus was detected in cultivation survey (Figure 3(a)). There was no evidence of allergic mucin, suggestive of allergic fungal rhinosinusitis. When all of the material was removed, granulation formation was seen at the posterior wall of the maxillary sinus (Figure 3(b)). The mucosa of the maxillary sinus aside from that at the posterior wall was pale, thickened edematous mucosa, as commonly seen in SFBs. Granulation tissue was excised as much as possible and submitted for a rapid histological examination, the results of which showed fungal mucosal infiltration but no malignant findings (Figure 4). The maxillary sinus was opened into the middle and inferior meatus.
Patient-specific pre-operative simulation of the surgically assisted rapid maxillary expansion using finite element method and Latin hypercube sampling: workflow and first clinical results
Published in Computer Methods in Biomechanics and Biomedical Engineering, 2023
L. Bonitz, A. Volf, S. Hassfeld, A. Pugachev, B. Ludwig, S. Chhatwani, A. Bicsák
The surgically assisted rapid maxillary expansion (SARME) was first described by E. C. Angell in 1860 (Angell 1860). Today, SARME and surgically assisted rapid palatal expansion (SARPE) are common, combined orthodontic and surgical procedures used to correct maxillary transverse deficiency in skeletally mature patients (de Gijt et al. 2017). The procedure consists of two steps. First, the maxilla is weakened by a bilateral osteotomy in the Le-Fort-I plane and pterygomaxillary suture and an opening in the mid-palatal suture is made (midline split). The extent of osteotomy depends on the patient’s age, bone quality, and anatomical conditions including the dental root position and neural structures (Koudstaal et al. 2005; Han et al. 2009; Rana et al. 2013). The state-of-the-art technique involves weakening the maxilla equally on both sides based on the experience of the surgeon. In this way, the extent of osteotomy can vary widely (Al-Ouf et al. 2010; Nada et al. 2012; Seeberger et al. 2015). In the second step, the maxilla is expanded using a distraction device, which is mounted on the palatine bone or the bicuspids of both the maxillary segments (Sander et al. 2006; Adolphs et al. 2014; Ulusoy and Dogan 2018).
Three-dimensional morphological and biomechanical analysis of temporomandibular joint in mandibular and bi-maxillary osteotomies
Published in Computer Methods in Biomechanics and Biomedical Engineering, 2022
Bingmei Shao, Annan Li, Jingheng Shu, Hedi Ma, Shiming Dong, Zhan Liu
An analysis was performed to evaluate the significance of the differences in the effects of mandibular and bi-maxillary osteotomies on the TMJs. Mono-maxillary (mandible) osteotomy: between the control and mono-pre groups, and between the control and mono-post groups.Bi-maxillary osteotomy: between the control and bi-pre groups, and between the control and bi-post groups.TMD patients: between the control and TMD-pre (the preoperative patients with TMD) groups, between the control and TMD-post (the postoperative patients with TMD) groups, between the control and TMD-mono-pre [the preoperative patients with TMD underwent mono-maxillary osteotomy (SSRO)] groups, between the control and TMD-mono-post (the postoperative patients with TMD that underwent SSRO) groups, between the control and TMD-bi-pre (the preoperative patients with TMD that underwent bi-maxillary osteotomies [SSRO and Le Fort I osteotomy]) groups, and between the control and TMD-bi-post (the postoperative patients with TMD that underwent SSRO and Le Fort I osteotomy) groups.