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Jin Q, He Y, Yu B, Liu J, Fu X, Xu S, Qiao J, Chen Y, Gui L. The Spatial Relationship Between Coronoid Process and Zygomatic Complex After Reduction Malarplasty. Aesthetic Plast Surg 2024; 48:1529-1536. [PMID: 38424305 DOI: 10.1007/s00266-024-03897-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Accepted: 01/30/2024] [Indexed: 03/02/2024]
Abstract
BACKGROUND Reduction malarplasty presents challenges in terms of postoperative complications, particularly limited mouth opening. Excessive inward displacement of the zygomatic complex can impinge on the coronoid process resulting in restricted mouth opening. This study aimed to assess the spatial relationship between the coronoid process and the zygomatic complex after reduction malarplasty. METHODS A retrospective study was conducted, including consecutive patients underwent reduction malarplasty. Radiological measurements were performed before surgery and during the final follow-up, including the coronoid-condylar index, distance between the coronoid process and zygomatic complex, and thickness and density of the temporal and masseter muscles. Clinical and radiographic data were recorded and analyzed. RESULTS A total of 159 female patients were included with an average age of 28.1 years and a mean follow-up of 6.7 months. The mean coronoid-condylar index was 1:1.4, ranging from 1:0.6 to 1:2.6. Following surgery, the distances between the coronoid process and the anterior zygoma decreased by approximately 1 mm. Additionally, the postoperative distance between the highest point of the coronoid process and the zygomatic arch decreased by around 4 mm horizontally and changed approximately 1 mm vertically. No significant changes were observed in the thickness and density of the temporal and masseter muscles after surgery. CONCLUSIONS Reduction malarplasty led to a slight decrease in the distance between the coronoid process and the zygoma. The operation generally resulted in proximity between the highest point of the coronoid process and the zygomatic arch. However, we believe that common reduction malarplasty rarely leads to osseous impingement. LEVEL OF EVIDENCE IV This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266.
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Affiliation(s)
- Qi Jin
- No.1 Department of Craniomaxillofacial Surgery, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 33# Badachu Road, Shijingshan District, Beijing, China
| | - Yu He
- No.1 Department of Craniomaxillofacial Surgery, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 33# Badachu Road, Shijingshan District, Beijing, China
| | - Bing Yu
- No.1 Department of Craniomaxillofacial Surgery, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 33# Badachu Road, Shijingshan District, Beijing, China
| | - Jianfeng Liu
- No.1 Department of Craniomaxillofacial Surgery, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 33# Badachu Road, Shijingshan District, Beijing, China
| | - Xi Fu
- No.1 Department of Craniomaxillofacial Surgery, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 33# Badachu Road, Shijingshan District, Beijing, China
| | - Shixing Xu
- No.1 Department of Craniomaxillofacial Surgery, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 33# Badachu Road, Shijingshan District, Beijing, China
| | - Jia Qiao
- No.1 Department of Craniomaxillofacial Surgery, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 33# Badachu Road, Shijingshan District, Beijing, China
| | - Ying Chen
- No.1 Department of Craniomaxillofacial Surgery, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 33# Badachu Road, Shijingshan District, Beijing, China.
| | - Lai Gui
- No.1 Department of Craniomaxillofacial Surgery, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 33# Badachu Road, Shijingshan District, Beijing, China
- Department of Comprehensive Plastic Surgery, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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Nagpal A, Vaddi A, Tadinada A. Shifting the Spotlight From the Mandibular Condyle to the Coronoid Process: A Report of a Unique Case of Trifid Mandibular Coronoid Process. Cureus 2023; 15:e37593. [PMID: 37197120 PMCID: PMC10184719 DOI: 10.7759/cureus.37593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/06/2023] [Indexed: 05/19/2023] Open
Abstract
The trifid mandibular coronoid process is an uncommon finding characterized by three projections arising from the mandibular ramus instead of a single triangular coronoid process. Previous authors reported cases of the bifid coronoid process. The authors referred to them as the bifid/second/double coronoid process. This article aims to report a unique case of a trifid coronoid process incidentally detected during radiographic evaluation for implant planning. This article also emphasizes the effectiveness of cone beam computed tomography (CBCT) volume rendering as a valuable tool in demonstrating morphological variations such as the trifid coronoid process. In addition, we discussed possible etiologies for the trifid coronoid process. To the best of our knowledge, this is the first case of the trifid coronoid process.
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Affiliation(s)
- Archna Nagpal
- Oral and Maxillofacial Radiology, University of Connecticut, Farmington, USA
| | - Anusha Vaddi
- Oral and Maxillofacial Radiology, Virginia Commonwealth University School of Dentistry, Richmond, USA
| | - Aditya Tadinada
- Oral and Maxillofacial Radiology, University of Connecticut, Farmington, USA
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Ogata K, Iwanaga J, Ohba S, Asahina I, Dumont AS, Tubbs RS. Remarkably Elongated Coronoid Processes: A Cadaveric Case Report. Kurume Med J 2022; 67:117-119. [PMID: 36123024 DOI: 10.2739/kurumemedj.ms6723008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
An elongated coronoid process (ECP) can lead to impingement of the coronoid process on the body or arch of the zygomatic bone when opening the mouth. The etiology of ECP is unclear, but several theories have been postulated. We present a case of an ECP found in a 63-year-old in a Caucasian cadaveric specimen. The length of the coronoid process was 26.6 mm on the left side and 26.3 mm on the right side. To our knowledge, this is the longest coronoid process reported in the extant literature. The details of this case and the clinical significance are discussed.
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Affiliation(s)
- Kinuko Ogata
- Department of Regenerative Oral Surgery, Nagasaki University Graduate School of Biomedical Sciences
| | - Joe Iwanaga
- Department of Neurosurgery, Tulane Center for Clinical Neurosciences
| | - Seigo Ohba
- Department of Regenerative Oral Surgery, Nagasaki University Graduate School of Biomedical Sciences
| | - Izumi Asahina
- Department of Regenerative Oral Surgery, Nagasaki University Graduate School of Biomedical Sciences
| | - Aaron S Dumont
- Department of Neurosurgery, Tulane Center for Clinical Neurosciences
| | - R Shane Tubbs
- Department of Neurosurgery, Tulane Center for Clinical Neurosciences
- Department of Structural & Cellular Biology, Tulane University School of Medicine
- Department of Neurosurgery and Ochsner Neuroscience Institute, Ochsner Health System
- Department of Anatomical Sciences, St. George's University
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Çorumlu U, Kopuz C, Demir MT, Pirzirenli ME. Bilateral elongated mandibular coronoid process in an Anatolian skull. Anat Cell Biol 2016; 49:217-220. [PMID: 27722017 PMCID: PMC5052233 DOI: 10.5115/acb.2016.49.3.217] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Revised: 08/02/2016] [Accepted: 08/17/2016] [Indexed: 11/27/2022] Open
Abstract
Elongation or hyperplasia of coronoid process of mandible is rare condition characterized by abnormal bone development which cause malocclusion and the limited mouth opening. In this study, in an Anatolian skull, a case of bilateral elongation of mandibular coronoid process was presented. Levandoski panographic analysis was performed on the panoramic radiographie to determine the hyperplasia of the coronoid process. The right condylar process was exactly hyperplastic. The measurements of Kr-Go/Cd-Go were 95.10 mm/79.03 mm on right side and 97.53 mm/87.80 mm on left side. The ratio of Kr-Go/Cd-Go on the right side was 1.20. Elongated coronoid process is one of the factors cause mandibular hypomobility, it as reported here might lead to limited mouth opening. The knowledge of this variation or abnormality can be useful for the radiologist and surgeons and prevent misdiagnosis.
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Affiliation(s)
- Ufuk Çorumlu
- Government of Health, 112 Emergency Service, Medical Practitioner, Samsun, Turkey
| | - Cem Kopuz
- Department of Anatomy, Medical Faculty, Ondokuz Mayıs University, Samsun, Turkey
| | - Mehmet Tevfik Demir
- Government of Health, Hospital of Education and Investigation, Emergency Clinics, Samsun, Turkey
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Torenek K, Duman SB, Bayrakdar IS, Miloglu O. Clinical and radiological findings of a bilateral coronoid hyperplasia case. Eur J Dent 2015; 9:149-152. [PMID: 25713499 PMCID: PMC4319292 DOI: 10.4103/1305-7456.149665] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Coronoid hyperplasia (CH) is an infrequent condition that can be defined as an abnormal bony elongation of histologically normal bone. Progressive and painless difficulty in opening the mouth is the main clinical finding of CH. In this case report, the clinical and radiological findings for a 23-year-old male patient with bilateral CH are presented. When plain radiographies are not sufficient for diagnosis and evaluation of the CH, cone-beam computed tomography can be used.
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Affiliation(s)
- Kubra Torenek
- Department of Oral Diagnosis and Dentomaxillofacial Radiology, Faculty of Dentistry, Ataturk University, Erzurum, Turkiye
| | - Suayip Burak Duman
- Department of Oral Diagnosis and Dentomaxillofacial Radiology, Faculty of Dentistry, Ataturk University, Erzurum, Turkiye
| | - Ibrahim Sevki Bayrakdar
- Department of Oral Diagnosis and Dentomaxillofacial Radiology, Faculty of Dentistry, Ataturk University, Erzurum, Turkiye
| | - Ozkan Miloglu
- Department of Oral Diagnosis and Dentomaxillofacial Radiology, Faculty of Dentistry, Ataturk University, Erzurum, Turkiye
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da Costa Araújo FA, Melo Barbalho JC, de Farias ON, de Vasconcellos RJH, do Egito Vasconcelos BC. Pseudo-ankylosis caused by osteoma of the coronoid process. Ann Maxillofac Surg 2015; 4:208-10. [PMID: 25593877 PMCID: PMC4293848 DOI: 10.4103/2231-0746.147145] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
Osteoma of the coronoid process is a rare, slow-growing tumor that can lead to restrictive mandibular movements. This paper describes a case of osteoma of the right coronoid process in a 45-year-old woman who reported progressive facial asymmetry and the loss of mandibular movements. Aspects regarding the differential diagnosis, treatment, surgical access, possible complications and postoperative follow up of the case are also discussed. The osteoma of the coronoid process is a benign tumor that can reach a significant size, causing an increase in volume, facial asymmetry, limited mouth opening and fracture of the zygomatic complex in some cases. The combination of extraoral and intraoral accesses is useful in the case of large tumors of difficult access, such as in this case reported.
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Affiliation(s)
- Fábio Andrey da Costa Araújo
- Scholl of Dentistry of Pernambuco, University of Pernambuco, Oral and Maxillofacial Department, Av. General Newton Cavalcante, 1651, Tabatinga, CEP: 54753-220, Camaragibe, PE, Brazil
| | - Jimmy Charles Melo Barbalho
- Scholl of Dentistry of Pernambuco, University of Pernambuco, Oral and Maxillofacial Department, Av. General Newton Cavalcante, 1651, Tabatinga, CEP: 54753-220, Camaragibe, PE, Brazil
| | - Orley Nunes de Farias
- Scholl of Dentistry of Pernambuco, University of Pernambuco, Oral and Maxillofacial Department, Av. General Newton Cavalcante, 1651, Tabatinga, CEP: 54753-220, Camaragibe, PE, Brazil
| | - Ricardo José Holanda de Vasconcellos
- Scholl of Dentistry of Pernambuco, University of Pernambuco, Oral and Maxillofacial Department, Av. General Newton Cavalcante, 1651, Tabatinga, CEP: 54753-220, Camaragibe, PE, Brazil
| | - Belmiro Cavalcanti do Egito Vasconcelos
- Scholl of Dentistry of Pernambuco, University of Pernambuco, Oral and Maxillofacial Department, Av. General Newton Cavalcante, 1651, Tabatinga, CEP: 54753-220, Camaragibe, PE, Brazil
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