Three-dimensional Localization of Impacted Canines and Root Resorption Assessment Using Cone Beam Computed Tomography

Summary： The purpose of this study was to develop a new way to localize the impacted canines from three dimensions and to investigate the root resorption of the adjacent teeth by using cone beam computed tomography （CBCT）. Forty-six patients undergoing orthodontic treatments and having impacted canines in Tongii Hospital were examined. The images of CBCT scans were obtained from KaVo 3D exam vision. Angular and linear measurements of the cusp tip and root apex according to the three planes （mid-sagittal, occlusal and frontal） have been taken using the cephalometric tool of the InVivo Dental Anatomage Version 5.1.10. The measurements of the angular and linear coordinates of the maxillary and mandibular canines were obtained. Using this technique the operators could envision the location of the impacted canine according to the three clinical planes. Adjacent teeth root resorption.of 28.26 % was in the upper lateral incisors while 17.39% in upper central incisors, but no lower root resorption was found in our samples. Accurate and reliable localization of the impacted canines could be obtained from the novel analysis system, which offers a better surgical and orthodontic treatment for the patients with impacted canines.

Benefits of Using CBCT in Bilateral Maxillary Impacted Canines Extraction:A Case Report

Aim: Canines are the second most impacted teeth in jaws after third molars. Perforation of the anatomic structures, such as maxillary sinus and nasal fossa, are some of the complications of the surgery. In this case, bilateral maxillary impacted canines’ extraction, with the guidance of CBCT is done without any complication. Case: A 24-year-old female patient was referred to Istanbul University, Oral and Maxillofacial Surgery. Left and right deciduous canines and swelling at the right maxillary canine’s labial area were seen during the intraoral examination. Bilateral impacted canines were determined after evaluating the present CBCT images of the patient and orthodontic treatment was advised to the patient. Due to the refusal of orthodontic treament, extractions of the impacted teeth were decided. After the evaluation of CBCT images, the maxillary right canine was determined at the labial site while the maxillary left canine was determined at the palatinale site. Results: Right maxillary canine was lying between the right first incisor and right first molar and It was extracted with mucoperiosteal vestibule flap procedure. For the extraction, the tooth was divided into two pieces from the enamel-cement junction. Left maxillary canine was lying between the left first incisor and left first molar and It was extracted with mucoperiosteal palatinale flap procedure. Flap was stitched primarly with 3/0 silk sutures. Palatinal plaque, which was prepared before the surgery, was applied. Antibiotic, analgesic and moutwash were prescribed to the patient. 1 week following the surgery, stitches were removed and the healing was optimal. Conclusion: Impacted canines are a common clinic condition which requires a multi-discipliner approach. CBCT can increase the success of the treatment by preventing possible complications with determining the proximity of the anatomical structures and the localization of the impacted teeth. There were no sign of complication and the healing was optimal.

Root Resorption of Central Incisor by Impacted Canine in Unusual Transposition: Orthodontics and Implant Rehabilitation: 3-Year Follow-Up

This case presents an unusual transposition of an impacted canine on the central incisor that provides a multidisciplinary approach to its resolution. The patient comes to the consultation for mobility of the central incisor. Clinically, tooth mobility was confirmed with tooth crowding and persistence of the temporary canine. Cone beam tomography (CBCT) observed the atypical position of the permanent canine that caused root resorption of the ipsilateral central incisor and the need to extract both teeth. The conservative treatment of the bone structures during the dental enucleation of the impacted canine carried out by odontosection and the immediate bone grafting of the defect projected an acceptable regeneration of the bone volume for the insertion of the implant. The orthodontic treatment managed to correct the bite, position the upper premolar in the place of the canine tooth and maintain the space to place the implant in the central incisor. The three-year follow-up shows maintenance of the peri-implant crestal bone level, the success of orthodontic treatment with recovery of the patient’s function and aesthetics.

Calcifying Odontogenic Cyst of the Oral Cavity: A Clinical Case and Current Updates on the Ethiopathogenesis

Background: The calcifying odontogenic cyst (COC) is a rare pathological entity. It falls into a group of lesions with calcifications that present benign and sometime malignant tumor variants. Case Presentation: In the present study, we report on a case of intraosseous/intrasinusal COC with impacted maxillary canine and dentinoid structures odontoma-like. The clinical, radiographical, histopathological, and molecular characteristics of this pathological entity are discussed in relation also to the problems of differential diagnosis, treatment, and prognosis. Conclusion: The true COC is a rare entity in the oral cavity and represents about less than 1% of all odontogenic lesions. Careful clinical, instrumental and histological analysis must be performed for odontogenic cysts in order to accomplish the correct surgical act and to avoid recurrence.

Prevalence of Canine Impaction among Saudi Population at Al Qassim Area in the Kingdom of Saudi Arabia

Background: One of the most reported dental problems is a tooth impaction which is defined as the infraosseous position of the tooth after the estimated time of eruption [1]. Thus, the most notable tooth impaction is canine impaction which is a frequently encountered clinical problem. Aim: This study aimed to determine the prevalence of impacted canines among Saudi people from the 5-year period of 2013-2018 in Al Qassim area in the KSA. Methodology: A retrospective research designed was utilized in the study. A retrospective study simply means to “look back” in the past and usually done by obtaining data from medical records of the targeted population with common characteristics [2]. Results: This 5-year study covered year 2013 to 2018. In this study, there were 1500 who seek dental health in King Fahd Specialist Hospital. Thus, out of these clients, only 89 were identified with cases of impacted canine using the OPG with a prevalence rate of 5.9 %. In addition, it was found that out of 89 patients identified, the patients have impacted canines in different locations: maxillary, mandible, right side and left side. It was found that there were 187 impacted teeth in different locations among 89 clients affected. There were 48 cases (25.7%) of impacted canines on the right side while 64 cases (34.2%) were reported on the left side of the total group. Moreover, impacted maxillary canine were 68 cases (36.4%) and mandibular impacted canine were only 7 cases (3.7%) of the total group. Conclusion: The early detection and treatment approach of impacted canines among affected individuals is vital in order to prevent different problems that may arise during impaction of canine teeth. Awareness, early detection, proper diagnostic test and multiple treatment approaches are needed to prevent different sequelae due to canine impaction.