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Lateral luxation is defined as a traumatic displacement of a tooth in any direction other than axially. A laterally luxated tooth is often immobile because of its bony lock. It produces a high metallic sound during percussion. Pulp sensibility testing is likely to be negative during the initial follow-up. However, the tooth should be monitored until a definitive pulp diagnosis is made. Treatment includes local anesthesia, suturing soft tissue injuries, manual repositioning of the luxated tooth, and stabilization with a flexible splint for 4 weeks. Given the risk of pulp necrosis following lateral luxation, particularly in teeth with radiographically closed apices and severe displacement, an immediate (prophylactic) root canal treatment is recommended. The objective of this work was to report and discuss the management of a case of lateral luxation involving a permanent tooth treated by reduction, followed by contention with 0.4 steel wire and composite resin, and endodontic treatment, and which was complicated by root resorption 3 months later. We also highlighted the possible complications following lateral luxation, especially root resorption., Competing Interests: No conflicts of interest., (© 2022 The Authors. Clinical Case Reports published by John Wiley & Sons Ltd.)

Ossification of stylohyoid chain corresponds to the ossification of stylohyoid ligament that can vary from thin short to thick long ossification and can be associated with other calcifications. We report in this case a bilateral non painful complete ossification of the stylohyoid complex extended to the thyrohyoidien ligament., Competing Interests: All the authors declare that there is no conflicts of interest., (© 2022 The Authors. Clinical Case Reports published by John Wiley & Sons Ltd.)

Drug reaction with eosinophilia and systemic symptoms (DRESS) is a distinct part of severe cutaneous adverse reactions (SCARs). It is characterized by fever, rash, hematologic abnormalities, lymphadenopathy, or/and different degrees of visceral organ involvement. Its diagnosis is particularly challenging due to the variability of its clinical presentations and its long latency period (2-6 weeks). Allopurinol, an uric acid-lowering drug, has been incriminated in several cases of allopurinol-induced DRESS syndrome. Through this paper, we present a case of allopurinol-induced DRESS syndrome with initial oral mucosal involvement. A 69-year-old female patient presented with an erosive cheilitis that started 1 week prior to his presentation. The cheilitis was associated with maculopapular rash and fever. She started taking allopurinol, as treatment of Gout, 6 weeks before hospitalization. The histologic findings obtained from skin biopsy were consistent with a toxic drug reaction. A complete blood count (CBC) showed a moderate eosinophilia. Alteration of renal function was also noted, and the diagnosis of allopurinol-induced DRESS syndrome was made. Systemic corticosteroid therapy was therefore started. The patient completely recovered and had been healthy for 3 years before developing a recurrence after re-challenge with allopurinol., Competing Interests: The authors declare that they have no conflict of interest., (© 2021 The Authors. Clinical Case Reports published by John Wiley & Sons Ltd.)

The place of pemphigus vulgaris (PV) among autoimmune bullous diseases (AIBD) is well established. It is an acquired chronic, autoimmune, vesiculobullous disease in which IgG antibodies target desmosomal proteins to produce intraepithelial mucocutaneous blistering. The diagnosis is often challenging for the clinicians. It requires a combination of three major features: clinical, histopathological, and immunological. Clinically, oral lesions are the first manifestations of the disease in 50-90% of the patients with widespread blisters affecting the oral mucosa. On the skin, lesions are characterized by flaccid blisters that rapidly progress into erosions and crust formation. Umbilical lesions as a clinical manifestation of PV are peculiar and have rarely been reported, and they are not yet completely elucidated. Umbilical region involvement in patients with pemphigus was assessed in a limited study totalling just 10 patients. This localisation may be a valuable hint easing the diagnosis at the clinical level for patients with oral mucosal blisters. Dentists must be familiar with the clinical manifestations of PV to make an early diagnosis and start an early treatment which determines the prognosis of the disease. To the best of the authors' knowledge, the coexistence of these lesions with the oral lesions as a first sign of PV in the absence of skin involvement was reported in only one case of pemphigus vegetans (PVe). In this paper, we describe an observation of a female patient that was diagnosed with PV that begun with simultaneous oral and umbilical locations which coexisted for a period of 4 months before the appearance of other cutaneous lesions. We highlight the role of dentists, by being familiar with the clinical manifestations of PV, to make an early diagnosis to start an early treatment which determines the prognosis of the disease and to follow closely the evolution of lesions to change treatment if required. We also discuss the clinical, histological, and immunological features of the disease that enabled the differential diagnosis as well as the appropriate therapeutic management., Competing Interests: All the authors declare not having any conflicts of interest., (Copyright © 2021 Eya Moussaoui et al.)

An odontogenic cutaneous sinus tract is a pathologic canal that initiates in the oral cavity but opens externally at the cutaneous surface of the face or neck. It is frequently misdiagnosed, leading to inappropriate treatment. A 44-year-old female patient referred to us with a chronically draining lesion on his chin. The lesion previously was misdiagnosed by medical doctors and had undergone cryotherapy and surgery with a focus on the skin lesion and had received antibiotic therapy for a prolonged period of time. After clinical and radiologic examination the dental origin of the lesion was evident and proper endodontic treatment was performed followed by surgical treatment after the recurrence of pus discharge 2 weeks after the conventionnel root canal treatment. Five months later, after the treatment, the lesion showed an obvious healing. After 18 months, the patient was comfortable and a significant healing of the sinus tract was noted, the periapical radiograph shows clear regression of the periapical lesion and an improvement in bone trabeculation. The key to successful treatment of cutaneous sinus tract of dental origin must be appropriate communication between the dentist and the physician in order to achieve correct diagnosis and therapy in such cases., Competing Interests: There are no conflicts of interest., (Copyright: © 2021 Journal of Conservative Dentistry.)

Periostitis ossificans is a chronic disease characterized by an ossifying periostitis, occurring in children and young adults, commonly as a reaction to a mild infection or irritation. It is also characterized by the presence of lamellae of newly formed periosteal bone outside the cortex, giving the characteristic radiographic appearance of "onion skin." Aim . The aim of this paper was to present the clinical and radiographic findings, as well as the postoperative follow-up of two cases diagnosed with periostitis ossificans of dental origin, and to discuss the differential diagnosis and treatment modalities. Case Reports . In the first case, a 16-year-old adolescent was referred for a persistent mandibular swelling. Intraoral examination showed two sinus tracts in relation to the carious necrotic left mandibular first molar. The periapical radiograph showed a periapical lesion in relation to the two root canals of the left mandibular first molar. Occlusal radiographs revealed the "onion skin" bone formation aspect. In the second case, a 10-year-old girl presented to our department with a slightly painful mandibular swelling. The periapical radiograph showed a periapical lesion in relation to both the mesial and distal roots of the carious necrotic right mandibular first molar. Cone beam computed tomography (CBCT) showed a subperiosteal bone formation with an "onion skin" aspect. Diagnosis of periostitis ossificans in the two cases was confirmed and the lesion was resolved by simply an endodontic treatment. Conclusion . Specific attention should be given to clinical and radiographic exploration in case of children with mandibular swelling. As osteosarcoma can be misdiagnosed, additional examinations, such as computed tomography, can be useful in differential diagnosis and in searching malignancy signs., Competing Interests: The authors declare that there is no conflict of interests., (Copyright © 2020 Hana Bougatef et al.)

According to the American Association of Endodontists, "a 'true' vertical root fracture is defined as a complete or incomplete fracture initiated from the root at any level, usually directed buccolingually." Vertical root fracture (VRF) usually starts from an internal dentinal crack and develops over time, due to masticatory forces and occlusal loads. When they occur in teeth, those types of fractures can present difficulties in diagnosis, and there are however many clinic and radiographical signs which can guide clinicians to the existence of the fracture. Prognosis, most often, is hopeless, and differential diagnosis from other etiologies may be difficult sometimes. In this paper, we present a case of VRF diagnosed after surgical exploration; the enlarged fracture line was filled with a fluid resin. A 36-month clinical and radiological follow-up showed an asymptomatic tooth, reduction of the periodontal probing depth from 7 mm prior to treatment to 4 mm with no signs of ankylosis. In this work, the diagnosis and treatment alternatives of vertical root fracture were discussed through the presented clinical case.