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American Journal of Orthodontics and... Nov 2013In this study, we present a novel classification method for individual assessment of midpalatal suture morphology.
INTRODUCTION
In this study, we present a novel classification method for individual assessment of midpalatal suture morphology.
METHODS
Cone-beam computed tomography images from 140 subjects (ages, 5.6-58.4 years) were examined to define the radiographic stages of midpalatal suture maturation. Five stages of maturation of the midpalatal suture were identified and defined: stage A, straight high-density sutural line, with no or little interdigitation; stage B, scalloped appearance of the high-density sutural line; stage C, 2 parallel, scalloped, high-density lines that were close to each other, separated in some areas by small low-density spaces; stage D, fusion completed in the palatine bone, with no evidence of a suture; and stage E, fusion anteriorly in the maxilla. Intraexaminer and interexaminer agreements were evaluated by weighted kappa tests.
RESULTS
Stages A and B typically were observed up to 13 years of age, whereas stage C was noted primarily from 11 to 17 years but occasionally in younger and older age groups. Fusion of the palatine (stage D) and maxillary (stage E) regions of the midpalatal suture was completed after 11 years only in girls. From 14 to 17 years, 3 of 13 (23%) boys showed fusion only in the palatine bone (stage D).
CONCLUSIONS
This new classification method has the potential to avoid the side effects of rapid maxillary expansion failure or unnecessary surgically assisted rapid maxillary expansion for late adolescents and young adults.
Topics: Adolescent; Adult; Age Factors; Anatomy, Cross-Sectional; Bone Density; Child; Child, Preschool; Cone-Beam Computed Tomography; Cranial Sutures; Female; Humans; Image Processing, Computer-Assisted; Imaging, Three-Dimensional; Male; Maxilla; Middle Aged; Palatal Expansion Technique; Palate, Hard; Young Adult
PubMed: 24182592
DOI: 10.1016/j.ajodo.2013.04.022 -
The Pan African Medical Journal 2021Pleomorphic adenoma is a benign mixed tumor, which is composed of myoepithelial and epithelial cells. A fibrous capsule separates these cells from the surrounding...
Pleomorphic adenoma is a benign mixed tumor, which is composed of myoepithelial and epithelial cells. A fibrous capsule separates these cells from the surrounding tissues. Pleomorphic adenoma is the most common salivary gland tumour accounting for 40-70% of all major and minor salivary gland tumours. It is also the commonest minor salivary gland benign tumours accounting for 70% of all tumours. Hard palate is the commonest site followed by upper lip, buccal mucosa, tongue, floor of mouth, retromolar trigone. This case report discusses a case of pleomorphic adenoma of hard palate in an old man after complete excision of the tumour, which was confirmed by a biopsy specimen.
Topics: Adenoma, Pleomorphic; Adult; Humans; Male; Palatal Neoplasms; Palate, Hard
PubMed: 33912316
DOI: 10.11604/pamj.2021.38.146.26508 -
The Angle Orthodontist Mar 2015To evaluate the immediate effects of rapid maxillary expansion (RME) on the transverse skeletal and dentoalveolar changes with bone-borne (C-expander) and tooth-borne... (Comparative Study)
Comparative Study
OBJECTIVE
To evaluate the immediate effects of rapid maxillary expansion (RME) on the transverse skeletal and dentoalveolar changes with bone-borne (C-expander) and tooth-borne type expanders using cone-beam computed tomography (CBCT) in late adolescents.
MATERIALS AND METHODS
A sample of 28 female late-adolescent patients was divided into two groups according to the type of expander: bone-borne (C-expander, n = 15, age = 18.1 ± 4.4 years) and tooth-borne (hyrax, bands on premolars and molars, n = 13, age = 17.4 ± 3.4 years). CBCT scans were taken at 0.2-mm voxel size before treatment (T1) and 3 months after RME (T2). Transverse skeletal and dental expansion, alveolar inclination, tooth axis, vertical height of tooth, and buccal dehiscence were evaluated on maxillary premolars and molars. Paired t-test, independent t-test, one-way analysis of variance, and Scheffé post hoc analysis were performed.
RESULTS
The C-expander group produced greater skeletal expansion, except in the region of the first premolar (P < .05 or < .01), which showed slight buccal tipping of the alveolar bone. The Hyrax group had more buccal tipping of the alveolar bone and the tooth axes, except in the region of the second molar (P < .05 or < .01 or < .001). Dental expansion at the apex level was similar in the banded teeth (the first premolar and the first molar). Vertical height changes were apparent on the second premolar in the hyrax group (P < .05 or < .01). Significant buccal dehiscence occurred at the first premolar in the hyrax group (P < .01 or < .001). There were no significant differences between tooth types for any variables in the C-expander group.
CONCLUSIONS
For patients in late adolescence, bone-borne expanders produced greater orthopedic effects and fewer dentoalveolar side effects compared to the hyrax expanders.
Topics: Adolescent; Alveolar Process; Bicuspid; Cone-Beam Computed Tomography; Cranial Sutures; Dental Arch; Female; Follow-Up Studies; Humans; Maxilla; Molar; Orthodontic Anchorage Procedures; Orthodontic Appliance Design; Orthodontic Brackets; Palatal Expansion Technique; Palate, Hard; Retrospective Studies; Tooth Apex; Young Adult
PubMed: 25490552
DOI: 10.2319/030514-156.1 -
Biomedical Engineering Online Feb 2021The tongue and hard palate play an essential role in the production of sound during continuous speech. Appropriate tongue and hard palate contacts will ensure proper... (Review)
Review
The tongue and hard palate play an essential role in the production of sound during continuous speech. Appropriate tongue and hard palate contacts will ensure proper sound production. Electropalatography, also known as EPG, is a device that can be used to identify the location of the tongue and hard palate contact. It can also be used by a speech therapist to help patients who have a speech disorder. Among the group with the disease are cleft palate, Down syndrome, glossectomy, and autism patients. Besides identifying the contact location, EPG is a useful medical device that has been continuously developed based on the patient's needs and treatment advancement. This article reviews the technology of electropalatography since the early introduction of the device. It also discusses the development process and the drawbacks of the previous EPG systems, resulting in the EPG's upgraded system and technology. This review suggests additional features that can be useful for the future development of the EPG. The latest technology can be incorporated into the EPG system to provide a more convenient method. There are some elements to be considered in the development of EPG's new technology that were discussed in this study. The elements are essential to provide more convenience for the patient during speech therapy. New technology can accelerate the growth of medical devices, particularly on the development of speech therapy equipment that should be based on the latest technological advancements available. Thus, the advanced EPG system suggested in this article may expand the usage of the EPG and serve as a tool to provide speech therapy treatment services and not limited to monitoring only.
Topics: Humans; Monitoring, Physiologic; Palate, Hard; Technology; Tongue
PubMed: 33549118
DOI: 10.1186/s12938-021-00854-y -
Down's Syndrome, Research and Practice... Jul 2007Clear speech can often be challenging for people with Down syndrome. The shape of the hard palate in the top of the mouth influences speech production. A new paper...
Clear speech can often be challenging for people with Down syndrome. The shape of the hard palate in the top of the mouth influences speech production. A new paper reports detailed measures of the shape and size of the hard palate among children with Down syndrome.
Topics: Child; Cleft Lip; Cleft Palate; Down Syndrome; Humans; Language Development; Palate, Hard; Speech; Speech Intelligibility
PubMed: 17692182
DOI: 10.3104/updates.2050 -
Molecular and Clinical Oncology Sep 2021Infrastructure maxillectomy is a surgical procedure to remove the lower part of the maxilla and hard palate. The objective of the present study was to analyze clinical...
Infrastructure maxillectomy is a surgical procedure to remove the lower part of the maxilla and hard palate. The objective of the present study was to analyze clinical data and treatment outcome of patients who underwent infrastructure maxillectomy between 2011 and 2019. A total of 13 patients who underwent infrastructure maxillectomy for maxillary sinus and hard palate neoplasms between 2011 and 2019 were analyzed. These patients were subdivided into maxillary sinus neoplasm (n=5) and hard palate neoplasm (n=8) groups. All patients except one underwent infrastructure maxillectomy using the sublabial approach. One patient underwent an external approach through lateral rhinotomy. Postoperative reconstruction was performed for 11 patients using obturator, 6 patients using skin grafts and 3 patients using free flaps. A total of 6 patients had radiotherapy (RT), 3 had concurrent chemoradiotherapy (CCRT) and 2 had chemotherapy after surgery. The survival rate and recurrence rate were 61.5% (8/13) and 46.2% (6/13), respectively. The current results suggested that infrastructure maxillectomy may be an effective treatment for maxillary sinus neoplasms in the lower part of the maxillary sinus and hard palate neoplasms without causing marked functional or cosmetic morbidity. Postoperative RT or CCRT may be recommended to decrease the recurrence after infrastructure maxillectomy.
PubMed: 34276999
DOI: 10.3892/mco.2021.2342 -
International Journal of Surgery Case... Jan 2021Cancer of the hard palate is a fairly rare malignant tumor. Different histological types have been described in the hard palate, and that can affect its different...
INTRODUCTION
Cancer of the hard palate is a fairly rare malignant tumor. Different histological types have been described in the hard palate, and that can affect its different structures. Diagnosis is based on biopsy with histological examination and possibly on immunohistochemical markers to confirm the diagnosis and exclude other diagnostic hypotheses. The aim of this study was to determine histopathologic, clinical and therapeutic characteristics of malignant tumors of the hard palate.
PATIENTS AND METHODS
A retrospective review of 4 patients who underwent Surgical resection by trans oral approach was performed for different histological types of malignant tumors of the hard palate. These included squamous cell carcinoma (case1 and case 2), mucosal melanoma (case 3), and adenocarcinoma (case 4).
RESULTS
The T stage was analyzed for all cases. Two cases were classified as T2 stage with a tumor size between 2 and 4 cm and the two others, given the extension to the maxillary and nasal cavity were classified as T4a. Cervical lymph node metastasis was found in three patients.
DISCUSSION
Surgical resection is the treatment of choice for malignant tumors of the hard palate. There is a variety of surgical procedures that can be used via a trans oral approach. Reconstruction of palatal defects with a prosthesis is sufficient, whereas larger defects will require a local, regional or even microvascular free tissue flap. The differences between these surgical techniques are presented, and indications are discussed.
CONCLUSION
The therapeutic management for malignant tumors of the hard palate is essentially surgical, with or without postoperative radiotherapy, discussed on a case-by-case basis. Survival rate depends on several factors, including early diagnosis, histological characteristic and appropriate management.
PubMed: 33360635
DOI: 10.1016/j.ijscr.2020.12.024 -
CMAJ : Canadian Medical Association... Sep 2021
Topics: Antifungal Agents; Diabetes Mellitus, Type 2; Female; Humans; Middle Aged; Mucormycosis; Oral Ulcer; Palate, Hard
PubMed: 34544793
DOI: 10.1503/cmaj.211026-f -
Journal of General Internal Medicine Oct 2018
Topics: Aged; Fatal Outcome; Humans; Immunocompromised Host; Magnetic Resonance Imaging; Male; Mouth Diseases; Mucormycosis; Necrosis; Palate, Hard; Paranasal Sinus Diseases
PubMed: 30088205
DOI: 10.1007/s11606-018-4481-z