نتایج جستجو برای: maxillary premolar
تعداد نتایج: 37959 فیلتر نتایج به سال:
Transposition may affect both sexes equally and, although it may occur in the maxilla or in the mandible, the frequency of maxillary permanent canine involvement is the greatest [3]. In the maxilla the canine is transposed most frequently with the first premolar (Figure 1a,b), less often with the lateral incisor followed rarely by central incisor or second premolar In the mandible transposition...
Lower second premolars account for approximately 24 per cent of impactions, excluding third molars, even though most reports in the literature relating to impacted teeth address the maxillary canine, with relatively few reports on the lower second premolar. Conservative management involves surgical exposure of the crown, however, subsequent premolar eruption is unpredictable. A case is describe...
Cholesterol granuloma (CG) is a tissue reaction in response to the accumulation of cholesterol crystals rarely found in the maxillary sinus. The etiopathogenesis of maxillary sinus CG remains unclear. We reviewed the literature and added two new reports of cholesterol granuloma in maxillary sinus related to endodontically treated maxillary posterior teeth. The first report refers to a 45-year-o...
INTRODUCTION In this study, we evaluated the effects of orthodontic appliances and an extracted maxillary first premolar on the esthetic evaluation of a smiling face according to the perceptions of orthodontists and laypeople. METHODS Standardized oblique photographs of a young woman with a pleasing smile were taken. The photos were edited by using digital imaging software to produce 10 combi...
Gingival fibromatosis (GF) is a heterogenous group of disorders characterized by progressive enlargement of the gingiva caused by an increase in submucosal connective tissue elements. This article presents a case report of a 14-year-old female patient with idiopathic gingival fibromatosis in the maxillary region with radiographic feature of congenitally missing maxillary permanent left lateral ...
OBJECTIVE The purpose of this prospective, randomized, double-blind study was to compare the anesthetic efficacy of 4% articaine and 2% lidocaine (both with 1:100,000 epinephrine) for buccal infiltration in patients experiencing irreversible pulpitis in maxillary posterior teeth. STUDY DESIGN Forty patients with irreversible pulpitis in first premolar or first molar were divided into 4 study ...
INTRODUCTION The objective of this study was to cephalometrically compare the stability of complete Class II malocclusion treatment with 2 or 4 premolar extractions after a mean period of 9.35 years. METHODS A sample of 57 records from patients with complete Class II malocclusion was selected and divided into 2 groups. Group 1 consisted of 30 patients with an initial mean age of 12.87 years t...
Objectives: The purpose of this study was to compare the occlusal outcomes and the treatment time of Class II malocclusion with the Pendulum appliance and with two maxillary premolar extractions. Methods: For this, 48 Class II malocclusion patients were selected and divided into two groups according to the treatment protocol: group 1 consisted of dental study casts and initial cephalograms of 2...
Maxillary premolars exhibit variable root canal morphology, but it is quite rare to find three canals in their root system. The aim of this case report is to present the diagnosis and clinical management of a patient with anatomical variation of having three root canals in the maxillary first premolar. Three-canalled maxillary premolars are quite an endodontic challenge. A discussion is provide...
BACKGROUND The aim of this study was to measure the distance between the maxillary premolar and molar teeth apices to the buccal cortical bone and evaluate differences in gender and age group, using cone beam computed tomography (CBCT). MATERIAL AND METHODS This retrospective study comprised of 451 premolar and molar teeth of one hundred and thirteen patients who were admitted to Dicle Universi...
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