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1.
Orv Hetil ; 161(28): 1166-1174, 2020 07.
Artículo en Húngaro | MEDLINE | ID: mdl-32609624

RESUMEN

INTRODUCTION AND AIM: The aim of our study was to investigate the influence of the occlusal support, and mandibular third molars on mandibular angle and condylar fractures. METHOD AND RESULTS: Patients with unilateral and isolated angle or condylar fractures were included in this retrospective, cross-sectional study. Data was collected from patient records and panoramic x-rays. The predictor variables included the type of occlusal support and the presence or absence of third molars. The outcome variable was angle or condylar fracture, while other predictor variables included demographic factors. Bivariate (χ2 test) and logistic regression analyses were conducted to investigate the associations between variables and the outcome. 43 angle (mean age: 29.9 ± 12.8 years; 98.4% male) and 37 condylar (mean age: 46.8 ± 20.2 years; 62.2% male) fracture cases were included in this study. Bilateral occlusal support was present in 81.4% of angle fracture group and in 51.3% of condylar fracture group (p<0.001). In the case of bilateral occlusal support, an odds ratio (OR) of 4.2 was found for angle fractures (p<0.006). A third molar was present in 86% of the angle fracture group and in 43.2% of the condylar fracture group (p<0.001). The presence of a third molar exhibited an odds ratio of 8.1 for the angle fractures (p<0.001). When bilateral occlusal support and third molar were present simultaneously, the risk was 15.9 times higher for an angle fracture (p<0.001). CONCLUSION: The presence of occlusal support and/or third molars was significantly associated with angle fractures, however, the absence of occlusal support and/or third molars significantly correlated with condylar fractures. Orv Hetil. 2020; 161(28): 1166-1174.


Asunto(s)
Oclusión Dental , Mandíbula , Cóndilo Mandibular/lesiones , Fracturas Mandibulares/etiología , Tercer Molar/anatomía & histología , Diente Impactado/complicaciones , Adolescente , Adulto , Anciano , Estudios Transversales , Femenino , Humanos , Incidencia , Masculino , Fracturas Mandibulares/epidemiología , Persona de Mediana Edad , Tercer Molar/diagnóstico por imagen , Radiografía Panorámica , Estudios Retrospectivos , Factores de Riesgo , Corona del Diente/diagnóstico por imagen , Adulto Joven
2.
Clin Ter ; 171(3): e183-e184, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32323702

RESUMEN

Invasive Cervical Root Resorption (ICRR) has a poor known aetiology, compared with typical external root resorption it appears very aggressive, posing a high risk of tooth loss. ICCR is often misdiagnosed, the resorption is caused by cells of the peridontium penetrating the outer surface of the root in the cervical region, spreading out throughout the root dentin. ICCR is usually detected in the adulthood on permanent teeth, anyway in a small amount of cases is possible to observe ICCR on impacted permanent canines during the adolescence and first adulthood.The aim of this paper is to present our experience with a ICCR case occurred in a young woman previously treated for an impacted canine with orthodontic therapy.


Asunto(s)
Resorción Radicular , Adolescente , Adulto , Femenino , Humanos , Resorción Radicular/complicaciones , Diente Impactado/complicaciones
3.
Med. oral patol. oral cir. bucal (Internet) ; 25(2): e233-e239, mar. 2020. tab, graf, ilus
Artículo en Inglés | IBECS | ID: ibc-196253

RESUMEN

BACKGROUND: To review the literature on the effect of different surgical flaps upon patient morbidity (pain perception, trismus, swelling and osteitis) after impacted third molar extraction. MATERIAL AND METHODS: An electronic and complementary search of main databases and grey literature was performed up to January 2019 to retrieve randomized clinical trials. The Cochrane risk of bias assessment tool was used for methodological appraisal. A random-effects meta-analysis was conducted of pain perception and trismus. RESULTS: From the initially 1314 screened studies, only 11 were included in the qualitative synthesis, and 5 in the meta-analysis. There were no statistically significant differences in pain between the envelope and triangular flap designs over time, except on the sixth postoperative day, when the envelope flap proved more painful. Regarding trismus, statistically significant differences were observed on the seventh postoperative day, with greater mouth opening in the envelope flap group than in the triangular flap group. There were no clear differences in swelling and osteitis among the flap designs. CONCLUSIONS: Despite its limitations, the present meta-analysis found no clear differences in patient morbidity between the different flap designs


No disponible


Asunto(s)
Humanos , Diente Impactado/cirugía , Extracción Dental/métodos , Colgajos Quirúrgicos , Tercer Molar/cirugía , Diente Impactado/complicaciones , Extracción Dental/efectos adversos , Morbilidad , Resultado del Tratamiento , Percepción del Dolor , Trismo/etiología , Alveolo Seco/etiología
4.
Pan Afr Med J ; 33: 151, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-31558948

RESUMEN

Calcifying odontogenic cyst (COC) is a benign, locally aggressive, slow-growing lesion. Its occurrence constitutes about 2% of all odontogenic cysts. The most frequent sign is painless, slow growing swelling. Radiographically it appears as a well-defined unilocular radiolucency. The microscopical features of lesion showed well-delineated cystic proliferation of odontogenic epithelium with ghost cells and fibrous connective tissue wall. In the present study, 42 years old man who has COC associated with the impacted third molar treated with enucleation is reported after 6 months follow-up.


Asunto(s)
Tercer Molar/diagnóstico por imagen , Quiste Odontogénico Calcificado/diagnóstico , Diente Impactado/complicaciones , Adulto , Estudios de Seguimiento , Humanos , Masculino , Quiste Odontogénico Calcificado/diagnóstico por imagen , Quiste Odontogénico Calcificado/etiología , Diente Impactado/diagnóstico por imagen
5.
Am J Orthod Dentofacial Orthop ; 156(3): 391-400, 2019 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-31474269

RESUMEN

INTRODUCTION: Orthodontic traction of a maxillary impacted canine (MIC) increases the orthodontic treatment time. Therefore, the objective of this study was to evaluate the influence of MIC characteristics and factors associated with orthodontic treatment on the duration of active orthodontic traction. METHODS: This follow-up and retrospective study included 45 MICs orthodontically tractioned into the occlusal plane with the use of a standardized protocol. MIC characteristics, including type, sector, side, location, height, and complexity of impaction, as well as α and ß angles and canine root length and area were measured. Likewise, factors associated with orthodontic treatment, including sex, age, malocclusion, premolar extractions, previous incisor root resorption, ANB, APDI, and SNA angles, and PNS-ANS distance were also evaluated. The statistical analysis included multiple linear regressions to estimate the influence of all variables on the duration of traction (α = 0.05). RESULTS: Sex had significant influence (P = 0.027) on the time of traction; in female patients, the time was 2.05 months more than in male patients. Bilateral impaction treatment increased the time by 2.74 months compared with unilateral cases (P = 0.001). Traction of bicortically centered impacted canines increased the duration of traction by 2.85 months (P = 0.001). Finally, the traction time increased in 2.35 months (P = 0.046) when the impaction sectors were 4 or 5 (close to the midline). CONCLUSIONS: The duration of active orthodontic traction of MIC is mainly influenced by sex, bilateral type, bicortically centered location, or when MIC is located in sector 4 or 5 close to midline, increasing the traction time by some months.


Asunto(s)
Diente Canino/cirugía , Maxilar/cirugía , Ortodoncia Correctiva/métodos , Diente Impactado/complicaciones , Diente Impactado/terapia , Adolescente , Diente Canino/diagnóstico por imagen , Femenino , Estudios de Seguimiento , Humanos , Incisivo , Masculino , Maloclusión/clasificación , Maloclusión/terapia , Maxilar/diagnóstico por imagen , Procedimientos Quirúrgicos Orales , Métodos de Anclaje en Ortodoncia/instrumentación , Métodos de Anclaje en Ortodoncia/métodos , Aparatos Ortodóncicos Fijos , Ortodoncia Correctiva/instrumentación , Evaluación de Procesos y Resultados en Atención de Salud , Planificación de Atención al Paciente , Radiografía Dental , Estudios Retrospectivos , Resorción Radicular/complicaciones , Factores Sexuales , Factores de Tiempo , Erupción Dental , Raíz del Diente/anatomía & histología , Raíz del Diente/diagnóstico por imagen , Diente Impactado/diagnóstico por imagen , Diente Impactado/cirugía , Tracción , Resultado del Tratamiento
6.
Am J Case Rep ; 20: 1148-1151, 2019 Aug 05.
Artículo en Inglés | MEDLINE | ID: mdl-31378777

RESUMEN

BACKGROUND Dentigerous cysts are slow-growing odontogenic cysts that usually develop unilaterally as part of a pre-existing syndrome. Non-syndromic bilateral dentigerous cysts are extremely rare, but clinicians should be aware of this condition to ensure prompt diagnosis and management and to prevent complications. CASE REPORT A case is presented of bilateral mandibular dentigerous cysts that were discovered incidentally in a 44-year-old man who presented for extraction of a retained maxillary deciduous tooth. Histological examination of the tissue specimens following bilateral enucleation confirmed the diagnosis of bilateral dentigerous cysts. CONCLUSIONS In this case, incidental bilateral dentigerous cysts were identified and treated by enucleation. The absence of an associated syndrome should not exclude the possibility of the diagnosis of dentigerous cysts, which should be removed to prevent future complications.


Asunto(s)
Quiste Dentígero/etiología , Hallazgos Incidentales , Enfermedades Mandibulares/patología , Tercer Molar/patología , Diente Impactado/complicaciones , Adulto , Quiste Dentígero/diagnóstico por imagen , Quiste Dentígero/cirugía , Humanos , Masculino , Enfermedades Mandibulares/diagnóstico por imagen , Enfermedades Mandibulares/cirugía , Tercer Molar/diagnóstico por imagen , Tercer Molar/cirugía , Radiografía Panorámica , Diente Impactado/diagnóstico por imagen , Diente Impactado/cirugía
7.
Arch Oral Biol ; 107: 104486, 2019 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-31374491

RESUMEN

OBJECTIVE: The aim of this study was to investigate the association between mandibular third molar position and occurrence of pericoronitis. DESIGN: The systematic review was performed based on PRISMA criteria (Prospero: CRD42018102835). The electronic search was performed in Medline, Virtual Health Library and Web of Science (until August 2018), without language restriction. Two researchers independently selected studies, extracted data, and assessed methodologic quality. Twenty-one articles were included in the review, comprising 6895 patients, with 1913 third mandibular molars being affected by pericoronitis. Ten studies were incuded in meta-analysis. RESULTS: The third molar in vertical position of Winter is the one with the greatest chance of presenting pericoronitis, compared to the other positions, while the horizontal position decreases this chance. There was no significant difference in the chance of pericoronitis between positions I and II of Pell & Gregory (OR: 0.29; IC: 0.07-1.23, I2 = 88%). Third molars classified in position A had greater chance of pericoronitis when compared to those in position B (OR: 7.13; IC: 1.31-38.74, I2 = 93%). The vertical position of the lower third molar is more associated with the occurrence of pericoronitis when compared to the other positions. CONCLUSIONS: Vertical position of the lower third molar is more associated with the occurrence of pericoronitis when compared to the other Winter' positions. Considering Pell and Gregory positions, position A had a greater chance of pericoronitis compared to position B. The prophylactic removal of lower third semi-erupted vertical molar or in position A is indicated to prevent pericoronitis.


Asunto(s)
Tercer Molar , Pericoronitis/etiología , Diente Impactado/complicaciones , Humanos , Mandíbula
8.
Am J Orthod Dentofacial Orthop ; 156(2): 178-185, 2019 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-31375227

RESUMEN

INTRODUCTION: This study aimed to identify significant factors affecting the spontaneous angular changes of impacted mandibular third molars as a result of second molar protraction. Temporary skeletal anchorage devices in the missing mandibular first molar (ML-6) or missing deciduous mandibular second molar (ML-E) with missing succedaneous premolar spaces provided traction. METHODS: Forty-one mandibular third molars of 34 patients (10 male and 24 female; mean age 18.3 ± 3.7 years) that erupted after second molar protraction were included in this study. They were classified into upright (U) and tilted (T) groups. Linear and angular measurements were performed at the time of treatment initiation (T1) and of ML-6 or ML-E space closure (T2). Regression analyses were used to identify significant factors related to third molar uprighting. RESULTS: Nolla stage (odds ratio [OR] 4.1), sex (OR 0.003 for male), third molar angulation at T1 (OR 1.1), missing tooth space (OR 0.006), rate of third molar eruption (OR 23.3), and rate of second molar protraction (OR 0.2) significantly affected third molar uprighting. Age, third molar angulation at T1, rate of third molar eruption, and rate of second molar protraction were significant factors for predicting third molar angulation at T2. CONCLUSIONS: Available space for third molar eruption before and after second molar protraction is not associated with uprighting of erupting third molars. Older patients whose third molars are in greater Nolla stage, are in a more upright position at T1, and have a greater eruption rate have a greater chance for third molar uprighting. Alternatively, an increase in second molar protraction rate results in mesial tipping of the third molars.


Asunto(s)
Maloclusión/prevención & control , Maloclusión/fisiopatología , Mandíbula/fisiopatología , Tercer Molar/fisiopatología , Diente Impactado/fisiopatología , Adolescente , Adulto , Puntos Anatómicos de Referencia , Diente Premolar , Femenino , Humanos , Masculino , Maloclusión/diagnóstico por imagen , Mandíbula/anatomía & histología , Mandíbula/diagnóstico por imagen , Diente Molar/anatomía & histología , Diente Molar/diagnóstico por imagen , Diente Molar/fisiopatología , Tercer Molar/anatomía & histología , Tercer Molar/diagnóstico por imagen , Aparatos Ortodóncicos , Cierre del Espacio Ortodóncico , Ortodoncia Correctiva , Erupción Dental , Diente Primario , Diente Impactado/complicaciones , Diente Impactado/diagnóstico por imagen , Adulto Joven
9.
Gen Dent ; 67(4): e7-e10, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-31355773

RESUMEN

Surgical removal of third molars is associated with complications that can be as common as pain and trismus and as rare as mandibular fracture. A fracture can occur when the resistance of the bone tissue is lower than the forces applied by the surgeon during the procedure. The aim of this article is to report a case of jaw fracture after tooth extraction and subsequent surgical treatment of the fracture under general anesthesia with an option for a submandibular approach. A plate and screw system with a 2.4-mm profile was used for osteosynthesis after reduction of the fracture. The patient was followed up for 6 months after surgery and reported no functional or esthetic complaints. Treatment of mandibular fractures should aim to reestablish functional occlusion and mandibular continuity with the least possible risk of adverse sequelae. Planning for each individual case of third molar extraction requires accurate clinical examination and image evaluation to lessen the risk of fracture.


Asunto(s)
Fracturas Mandibulares , Tercer Molar , Extracción Dental/efectos adversos , Diente Impactado , Estética Dental , Humanos , Mandíbula , Fracturas Mandibulares/etiología , Fracturas Mandibulares/cirugía , Diente Impactado/complicaciones
10.
Medicina (Kaunas) ; 55(6)2019 Jun 24.
Artículo en Inglés | MEDLINE | ID: mdl-31238599

RESUMEN

BACKGROUND AND OBJECTIVES: Impacted third molars (ITM) are the most commonly-impacted teeth. There is a risk for ITM to cause a number of pathological conditions, and external root resorption (ERR) of adjacent teeth is one of the most prevalent. Retaining or prophylactic extraction of ITM is a polemic topic. External root resorption of adjacent teeth is one of possible indications for prophylactic removal of ITM. The aim of this study was to assess the relationship between external root resorption (ERR) on the distal aspect of second molars' roots and positional parameters of ITM. Methods: Cone beam computed tomography scans of 109 patients (41 males, 68 females; mean age 26.4 ± 7.9 years) with 254 ITM (131 in the maxilla and 123 in the mandible) were retrospectively analyzed. Positional parameters of ITM (mesio-distal position, angulation, impaction depth, and available eruption space) were evaluated. The presence, location, and depth of ERR of adjacent second molars were assessed. Results: Analysis showed a relationship between ITM impaction depth, mesial inclination angle, and the presence of ERR. Mesial inclination angle of more than 13.6° increased the odds of ERR occurrence by 5.439 (95% CI, 2.97-9.98). ITM presence at the level of ½ of roots of the adjacent second molar or more apically increased the odds of ERR occurrence by 2.218 (95% CI, 1.215-4.048). No significant correlation was detected between the occurrence of ERR and patient age, gender, or the available eruption space in the mandible. Depth of ERR did not depend on its location. Conclusions: Incidence of ERR in second molars is significantly associated with mesial inclination and a deep position of ITM.


Asunto(s)
Tercer Molar/lesiones , Resorción Radicular/etiología , Diente Impactado/complicaciones , Adolescente , Adulto , Tomografía Computarizada de Haz Cónico/métodos , Femenino , Humanos , Incidencia , Masculino , Persona de Mediana Edad , Tercer Molar/fisiopatología , Curva ROC , Estudios Retrospectivos , Resorción Radicular/fisiopatología , Diente Impactado/fisiopatología
11.
Int Orthod ; 17(2): 249-255, 2019 06.
Artículo en Inglés | MEDLINE | ID: mdl-31040074

RESUMEN

OBJECTIVE: To analyse the amount of root resorption of mesially or horizontally impacted mandibular third molars after orthodontic uprighting treatment. MATERIALS AND METHODS: Twenty-four patients with an age range of 20∼26years old who had mesially/horizontally impacted third molars with complete root formation. And those with decayed or missing the mandibular first molar on the same side were selected. The lower third molars were uprighted and the extraction spaces closed. Root resorption was compared with paired t-test. The related risk factors for root resorption were compared with Pearson correlation analysis. RESULT: The average uprighting time was 10.00 months (4∼16months). The study showed that all the impacted third molars were uprighted and got satisfactory outcomes after treatment. Shortening in length of mandibular third molar roots was detected at the end of the treatment, but no statistically significant differences were found (P<0.05). Root resorption was correlated with the duration of uprighting and the distance that root moved. CONCLUSION: Impacted mandibular third molars were uprighted and the amount of root resorption of third molar after treatment was not increased. The duration of uprighting and the distance that root moved influence the degree of root resorption.


Asunto(s)
Tercer Molar/patología , Resorción Radicular/etiología , Técnicas de Movimiento Dental/efectos adversos , Diente Impactado/terapia , Adulto , Femenino , Humanos , Masculino , Mandíbula/diagnóstico por imagen , Diente Molar/diagnóstico por imagen , Diente Molar/patología , Tercer Molar/diagnóstico por imagen , Aparatos Ortodóncicos Fijos , Factores de Riesgo , Técnicas de Movimiento Dental/métodos , Diente Impactado/complicaciones , Adulto Joven
12.
Niger J Clin Pract ; 22(4): 527-533, 2019 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-30975958

RESUMEN

Objective: The objective of this study is to determine the incidence of impacted teeth and the frequency of pathologies they caused by cone beam computed tomography (CBCT) retrospectively. Materials and Methods: In this study, 608 patients' CBCT images were analyzed retrospectively. Detected impacted teeth were classified as incisor, canine, premolar, molar, third molar, and supernumerary teeth. The pathologies caused by impacted teeth are classified as cysts or tumors, tooth decay, root resorptions, and periodontal bone loss. Results: Impacted teeth were detected in 34.37% of the 608 CBCT images included in the study. The distribution of impacted teeth was 9.4% incisor, 29.4% canine, 9.9% premolar, 2.9% molar, 9.3% supernumerary, and 39.9% third molar teeth. Approximately 63.7% of the impacted teeth caused a pathology. The pathology that was most commonly caused by impacted teeth was periodontal bone loss (44.4%), and respectively others were root resorptions (33.3%), cysts or tumors (8.6%), and tooth decay (2.3%). The most common cause of this pathology was right mandibular third molar teeth. Conclusion: Impacted teeth were common and they often caused a pathology. CBCT is a useful device to assess the impacted teeth. When the impacted teeth are evaluated, each tooth should be assessed within itself. If the impacted teeth are not caused by pathology, they can be kept under control.


Asunto(s)
Pérdida de Hueso Alveolar/patología , Tomografía Computarizada de Haz Cónico/métodos , Caries Dental/patología , Maxilar/diagnóstico por imagen , Resorción Radicular/diagnóstico por imagen , Diente Impactado/diagnóstico por imagen , Adolescente , Adulto , Pérdida de Hueso Alveolar/epidemiología , Pérdida de Hueso Alveolar/etiología , Diente Premolar/diagnóstico por imagen , Femenino , Humanos , Incidencia , Incisivo/diagnóstico por imagen , Masculino , Diente Molar/diagnóstico por imagen , Tercer Molar/diagnóstico por imagen , Estudios Retrospectivos , Resorción Radicular/epidemiología , Diente Impactado/complicaciones , Diente Impactado/epidemiología , Diente Supernumerario/diagnóstico por imagen
13.
Dent Traumatol ; 35(3): 188-193, 2019 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-30793485

RESUMEN

BACKGROUND/AIMS: Angle fractures represent the largest percentage of mandibular fractures. They pose as a unique entity because of their codependent morphological dynamic factors, rendering the understanding of the mechanism, and treatment challenging. The aim of this study was to analyze the association between the mandibular gonial angle and the risk of mandibular angle fracture while highlighting its clinical relevance. MATERIALS AND METHODS: A retrospective analysis of radiographs of patients treated for mandibular fractures was done. The factors studied were as follows: the presence of a high gonial angle and an impacted third molar. The outcome was mandibular angle fracture. The gonial angle was measured using Planmeca Digital Software 3.7.0.R. Status of the third molar was also noted. Data obtained were analyzed using SPSS 22 (IBM Corp, Armonk, NY). RESULTS: The sample comprised 70 mandibular fractures (32 angle fractures and 38 non-angle fractures). The mean gonial angle in the angle fracture group was 128.5 ± 5.4º which was 10.2° larger than in the non-angle group (mean 118.5 ± 4.4º; P = 0.0001). Patients with a high gonial angle were 8.7 times more likely to sustain an angle fracture than those with normal or low gonial angles. A statistically significant relationship between the presence of impacted third molar and patients sustaining mandibular angle fractures was noted (P = 0.0001). CONCLUSION: Subjects with a high gonial angle and an impacted third molar are at an increased risk for mandibular angle fracture due to direct and indirect morphological factors.


Asunto(s)
Fracturas Mandibulares , Diente Impactado , Humanos , Mandíbula , Fracturas Mandibulares/epidemiología , Fracturas Mandibulares/etiología , Tercer Molar , Estudios Retrospectivos , Diente Impactado/complicaciones
14.
Prog Orthod ; 20(1): 5, 2019 Feb 04.
Artículo en Inglés | MEDLINE | ID: mdl-30714076

RESUMEN

BACKGROUND: Even though periodontal health was suggested to be not related to the traction technique, some other variables might influence the esthetic outcome of palatally displaced canines (PDC) when aligned, such as the initial position and impaction rate of the canine before treatment. The purpose of the present study was therefore to evaluate the existing correlations between periodontal health outcome of PDC after their exposure and alignment and their initial position identified according to the different rates of impaction severity. MATERIALS AND METHODS: The final sample enrolled 293 PDC which satisfied inclusion and exclusion criteria. All the canines were exposed using CT by the same oral surgeon and orthodontic traction was applied using the easy cuspid device followed by fixed appliance treatment. Image analysis and periodontal status evaluation were performed for all PDCs. RESULTS: α-Angle and d-distance showed no significant differences in the periodontal outcome of PDCs after treatment. The only tested variable showing significant differences was S, since canines with CEJ visible at the end of the treatment presented sectors with a mean score of 1.67, which was significantly different (P < 0.05) when compared to the S-sector for the canines that showed PD < 2 mm at the end of the treatment. CONCLUSIONS: Radiographic variables as α-Angle and d-distance seem to not influence the periodontal outcome of the treated impacted canine regardless of the amount of gravity. On the contrary, S-sector might play a significant role when higher rates of gravity are present suggesting the possibility in few cases for periodontal damage at the end of treatment.


Asunto(s)
Diente Canino , Diente Impactado/fisiopatología , Adolescente , Niño , Humanos , Maxilar , Periodoncio/patología , Estudios Retrospectivos , Diente Impactado/complicaciones
16.
Am J Orthod Dentofacial Orthop ; 155(1): 28-39, 2019 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-30591160

RESUMEN

INTRODUCTION: The orthodontic traction of impacted canines is a procedure of variable complexity. The objective of this study was to determine the influence of this complexity on the root resorption (RR) of adjacent incisors, using cone-beam computed tomography. METHODS: This longitudinal retrospective study included 45 patients (19 female, 11 male; ages, 18.16 ± 7.3 years) with maxillary impacted canines, classified into 2 groups according to the level of orthodontic traction complexity: low complexity group (n = 20) and high complexity group (n = 25). The amounts of RR of 45 maxillary central and 45 lateral incisors were evaluated before and after treatment. Complexity was defined considering impaction sector, eruption inclination angle, and canine position (palatal, buccal, or bicortical). Three orthodontists measured RR in each maxillary incisor. Independent t tests or Mann-Whitney U tests were used to compare resorption between groups depending on the normality of the data. A multiple linear regression was calculated to evaluate the influence of all variables on RR (α = 0.05). RESULTS: RR of maxillary incisors in the sagittal, coronal, and axial sections showed no significant differences between groups (P > 0.05). Independently of the groups, RR ranged approximately from 1 to 1.5 mm and from 3 to 4 mm2. RR was less than 2 mm2 in the axial sections. Multiple linear regression indicated no significant influence of orthodontic treatment complexity on RR. Male patients had more RR, specifically in the maxillary central incisors than female patients (P < 0.05). CONCLUSIONS: The complexity of orthodontic traction of impacted maxillary canines is not a risk factor for greater RR of maxillary incisors close to the impaction area.


Asunto(s)
Incisivo/fisiopatología , Aparatos Ortodóncicos Fijos , Ortodoncia Correctiva/efectos adversos , Resorción Radicular/etiología , Diente Impactado/terapia , Adolescente , Niño , Tomografía Computarizada de Haz Cónico , Femenino , Humanos , Incisivo/diagnóstico por imagen , Modelos Lineales , Estudios Longitudinales , Masculino , Maxilar , Métodos de Anclaje en Ortodoncia/efectos adversos , Métodos de Anclaje en Ortodoncia/instrumentación , Estudios Retrospectivos , Factores de Riesgo , Diente Impactado/complicaciones , Diente Impactado/diagnóstico por imagen
17.
J Ayub Med Coll Abbottabad ; 31(4): 496-501, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-31933298

RESUMEN

BACKGROUND: The impaction of maxillary third molars causes the crowns of maxillary first and second molars to tip distally in patients with maxillary posterior segment discrepancy. The aim of this study was to compare the maxillary first and second molar angulations in patients with maxillary posterior segment discrepancy (MPSD) with non-maxillary posterior segment discrepancy (N-MPSD) and evaluate the effect of their angulations on various divergence patterns. METHODS: A cross-sectional study was conducted using the pre-treatment lateral cephalograms of 180 subjects which were divided into two groups, i.e., MPSD and N-MPSD. The Mann-Whitney U test was applied to compare various skeletal and dental parameters between the two groups and a pairwise comparison was made among the vertical growth patterns. The Kruskal Wallis test was used to compare the mean molar angulations and overbite among the three divergence patterns. RESULTS: The ratio of anterior to total palatal plane (p≤0.001) and the molar angulation (p≤0.001) showed significant differences between the MPSD and N-MPSD groups. In the MPSD group, significant differences were found between the overbite in the normo-divergent versus hyperdivergent (p≤0.001) and hypodivergent versus hyperdivergent groups (p≤0.001), and in the angulation of the first maxillary molars in the normo-divergent versus hyperdivergent groups (p≤0.001). CONCLUSIONS: MPSD causes reduced maxillary first and second molar angulations. A ratio of the anterior palatal plane to total palatal plane length of ≥0.51 was seen in patients with impacted maxillary third molars.


Asunto(s)
Maxilar/crecimiento & desarrollo , Maxilar/patología , Diente Molar , Sobremordida/etiología , Diente Impactado/complicaciones , Adolescente , Adulto , Estudios de Casos y Controles , Cefalometría , Estudios Transversales , Humanos , Maxilar/diagnóstico por imagen , Adulto Joven
18.
Head Neck Pathol ; 13(4): 554-561, 2019 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-30564996

RESUMEN

Osteomas are benign osteogenic neoplasms caused by proliferation of mature compact or cancellous bone. Clinically they may be classified as peripheral, central or extraskeletal. Osteomas usually involve the craniofacial region with mandible being the most common site. Central osteoma of the jaws is a very rare entity with only 13 cases reported in the literature till date of which only five cases occurred in the maxilla. Here we present a case of a large central osteoma of anterior maxilla associated with an impacted tooth, the first of its kind and a review of literature.


Asunto(s)
Neoplasias Maxilares/complicaciones , Neoplasias Maxilares/patología , Osteoma/complicaciones , Osteoma/patología , Diente Impactado/complicaciones , Humanos , Masculino , Adulto Joven
19.
Stomatologija ; 20(3): 102-108, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-30531165

RESUMEN

OBJECTIVE: Canine impaction is a dental anomaly involving intraosseous displacement of the unerupted tooth. This situation is of significant importance causing orthodontic, surgical and interceptive problems. Trauma in the incisor area is a possible cause of the displacement of the tooth bud of the permanent canine resulting in the deviated eruption path. The aim of this article is to present two clinical cases with diagnosis of maxillary canine displacement and impaction in the incisor region after a traumatic injury during childhood, discussing treatment possibilities and outcomes achieved after orthodontic treatment. MATERIALS AND METHODS: In this article ectopic maxillary canines migration in the central incisor area after a traumatic injury to the anterior upper teeth are described. The path of eruption of the canine can cause severe central incisor root resorption. Treatment strategy established for the case reports described involves orthodontic space opening, extraction of the central incisor, uncovering the impacted canine and orthodontic traction of the tooth in place of central incisor. Modification of crown morphology and color were essential to obtain an aesthetic and function outcome. RESULTS: The patients finished treatment with normal and stable occlusion, an adequate width of attached gingiva and good aesthetic results. CONCLUSION: Authors suggest that might have been a possible connection between the trauma of primary dentition causing the displacement of the tooth bud of permanent canine and the deviated path of eruption. For the growing patients with a combination of dental trauma and ectopic eruption, maxillary canine to replace a central incisor was a viable option, offering excellent aesthetic results without recourse to prosthetic replacement.


Asunto(s)
Diente Canino , Incisivo/fisiopatología , Resorción Radicular/etiología , Traumatismos de los Dientes/complicaciones , Técnicas de Movimiento Dental , Diente Impactado/complicaciones , Niño , Femenino , Humanos , Incisivo/diagnóstico por imagen , Incisivo/lesiones , Masculino , Maxilar , Radiografía Panorámica , Resorción Radicular/diagnóstico por imagen , Diente Impactado/fisiopatología , Diente Impactado/terapia
20.
Am J Orthod Dentofacial Orthop ; 154(4): 477-486, 2018 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-30268258

RESUMEN

INTRODUCTION: In this study, we aimed to determine the effect of maxillary and mandibular posterior space discrepancies and third molar angulations on the overbite. METHODS: Pretreatment lateral cephalograms of 131 subjects were analyzed. The sample included 83 open-bite and 48 deepbite subjects. A multiple regression analysis was used to evaluate the influence of maxillary and mandibular posterior space discrepancies and third molar angulations (predictor variables) on overbite. Correlations between posterior space discrepancy and third molar angulation, and correlations between predictor variables and dental angulation and height of posterior teeth and incisors were evaluated with the Pearson correlation coefficient. Subgroups with accentuated negative overbite and deepbite (27 open-bite, 37 deepbite) were compared with t tests. RESULTS: The multiple linear regression analysis showed a positive association of the mesial angulation of the mandibular third molar with overbite. Posterior space discrepancy was negatively associated with posterior teeth mesial angulation and dentoalveolar height. However, these associations were weak, with no clinically significant implications. The deepbite subgroup showed significantly greater mesial angulation of the mandibular third molars than did the open-bite subgroup. CONCLUSIONS: There was no clinically significant effect of posterior space discrepancies and third molar angulations on overbite and dental angulation and height of posterior teeth and incisors.


Asunto(s)
Incisivo/anatomía & histología , Maloclusión de Angle Clase II/patología , Tercer Molar/anatomía & histología , Sobremordida , Diente Impactado/complicaciones , Adolescente , Puntos Anatómicos de Referencia , Brasil , Niño , Arco Dental/patología , Femenino , Humanos , Incisivo/patología , Modelos Lineales , Masculino , Mandíbula , Maxilar , Tercer Molar/diagnóstico por imagen , Mordida Abierta , Erupción Dental , Diente Impactado/patología
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