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1.
BMC Oral Health ; 24(1): 393, 2024 Mar 27.
Artigo em Inglês | MEDLINE | ID: mdl-38539122

RESUMO

BACKGROUND: The placement of implants into the alveolar socket right after tooth extraction is called immediate implant placement (IIP). This approach has its particularities depending on which region of the jaws is involved. The anterior mandible region is peculiar due to the presence of mandibular incisors, which have the shortest roots among all permanent teeth. PURPOSE: This study aimed to investigate the factors that could be associated with the risk of either cortical bone wall perforation or invasion of the 2 mm secure distance from the surrounding anatomical structures (defined as unsafe implant placement), with IIP in the maxillary aesthetic zone, in a cone-beam computed tomography (CBCT) virtual study. MATERIALS AND METHODS: CBCT exams from 239 eligible subjects were investigated. Implants were virtually placed in two distinct positions: prosthetically-driven (along the long axis of the existing tooth) and bone-driven position (according to the available bone and with regard to nearby anatomical structures). Correlation between several variables was tested, and binary logistic regression analysis in order to assess of the possible associations between covariates and unsafe placement was performed. RESULTS: Safe placing implants was significantly higher for the bone-driven in comparison to the prosthetically-driven position (22.2% vs. 3.3%, respectively), and the 2-mm secure distance from anatomical structures was not possible to respect in the majority of cases (77.6% vs. 82.9%, respectively). Covariates associated with a higher risk of unsafe placement were tooth region (CI in relation to IL and CA), decrease of labial concavity angle (LCA), decrease of mandible basal bone height (MBBH), and decrease in mandibular bone thickness at the tooth apex level (MBT0). CONCLUSION: The possibility of safely placing immediate implants in the anterior mandible is significantly higher for bone-driven than in prosthetically driven position. Presurgical virtual planning with CBCT is a great tool for minimizing the risk of implant unsafe placement with regards to the anatomical conditions in the mandible.


Assuntos
Implantes Dentários , Humanos , Implantação Dentária Endóssea/métodos , Tomografia Computadorizada de Feixe Cônico/métodos , Mandíbula/diagnóstico por imagem , Mandíbula/cirurgia , Extração Dentária , Maxila/cirurgia
2.
Bioengineering (Basel) ; 11(3)2024 Mar 12.
Artigo em Inglês | MEDLINE | ID: mdl-38534546

RESUMO

Narrow-diameter implants (NDI) serve as a solution for treating limited bone volume in the anterior mandible. This study aimed to evaluate the one-year clinical outcomes of various NDIs in the mandibular incisor area after immediate loading in partially edentulous patients. This single-center, prospective, single-blinded, randomized controlled trial study included 21 patients, with 7 patients in each of the following groups: control (BLT NC SLActive®; Straumann), experimental group 1 (CMI IS-III Active® S-Narrow; Neobiotech), and experimental group 2 (CMI IS-III Active® Narrow; Neobiotech). Using full digital flow, two fixtures were placed in each patient and immediately provisionalized on the day of surgery. Evaluations encompassed periapical radiographs, implant stability quotient (ISQ), implant stability test (IST) readings, per-implant soft tissue health, patient satisfaction surveys, and esthetic score assessments. Definitive prostheses were delivered twelve weeks post-surgery (CRiS, number: KCT0007300). Following exclusions due to low stability values (n = 2), fixture failure (n = 5), and voluntary withdrawal (n = 1), the implant success rate for patients completing all clinical protocols stood at 100%. The resulting patient failure rates in the control, experimental group 1, and experimental group 2 were 50.0%, 42.9%, and 14.3%, respectively. There were no significant differences between the groups in terms of marginal bone loss, soft tissue health, patient satisfaction, and esthetic scores. Narrow implants showed superior clinical outcomes, followed by S-Narrow and Straumann implants. Calculated one-year survival rates at the implant level were 66.7% for the control group, 85.7% for experimental group 1, and 100% for experimental group 2. All three types of NDIs showed acceptable clinical and radiographic results during the year-long observation period.

3.
Cureus ; 16(1): e52804, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-38389599

RESUMO

BACKGROUND: The standard screening protocol for radiographic examination in dentistry as per the American Dental Association recommendations is a panoramic radiograph (PAN) and four horizontal bitewings. PAN inherently suffers from several shortcomings like the superimposition of anatomic structures, especially of the cervical spine that obscures a significant portion of the anterior maxilla and mandible. This region has a significant amount of pathology that is not adequately imaged. Three-dimensional (3D) imaging provides circumferential information on the area of interest and adds value to the diagnosis and treatment planning of pathology, especially in the anterior maxilla and mandible. However, there is not an adequate number of well-designed studies that articulate the true value addition of 3D imaging for the evaluation of this region. OBJECTIVES: The objective of this study is to evaluate the value addition of 3D imaging in diagnosing pathologies in the anterior maxilla and mandible when compared to two-dimensional PAN. MATERIALS AND METHODS: A total of 25 cases that had a diagnosis of anterior pathology and had both a PAN and a cone beam computed tomography (CBCT) scan were collected for this study. An institutional review board approval to retrospectively evaluate these data was obtained. The PAN and CBCT scans were randomly evaluated by a second-year dental student, an oral and maxillofacial radiology resident in training, and a board-certified oral radiologist. The scans were evaluated using a three-point modified Likert scale, where 1 represents "not visible or clear," 2 represents "visible but not clear," and 3 represents "visible and clear." The lesions were evaluated for characteristics like lesion location, size & shape, internal contents, borders of the lesion, cortical integrity, locularity, and effect on adjacent structures like root resorption. After the evaluation was completed, a comparison of the lesion diagnosis was done with histopathology to confirm the diagnosis. The evaluators were also asked to comment on the specific feature that 3D imaging provided that added value to the case. Kappa analysis was done to evaluate inter-operator reliability. RESULTS: PAN demonstrated significantly lower efficacy in identifying and diagnosing lesions. Only 56% of cases were analyzed using PAN, with 44% deemed undetectable or poorly visualized. These challenging cases necessitated CBCT scans for accurate diagnosis, which successfully diagnosed all 25 cases. The p-value of 0.0002 for PAN implies a highly significant difference from histopathology, suggesting the distinctions are not due to chance. Conversely, the p-value of 0.3273 for CBCT implies that observed differences may be random, lacking sufficient evidence to reject the null hypothesis. CBCT scans consistently outperformed PAN in visualizing various lesion characteristics, underscoring their superior diagnostic capabilities. CONCLUSIONS: In this study, with a small sample size, 3D imaging provided a significant value addition to the diagnosis and treatment planning by providing additional information regarding the location, extent, internal content, and effect on adjacent structures. The practical implications for clinical settings, along with comparisons to current literature, underscore the study's distinctiveness.

4.
Clin Oral Investig ; 27(12): 7821-7832, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-37950025

RESUMO

BACKGROUND: Restoring the mandibular anterior teeth by implants can be difficult due to potential complications arising from using prosthetic implant connections that are larger than the incisors at the cementoenamel junction level. METHODS: This retrospective study is aimed at determining the survival and esthetic outcomes of anterior mandible implants immediately placed and restored in patients diagnosed with stages 3-4 periodontitis. The study included 75 implants that were inserted along with guided bone regeneration in 42 patients. Over a follow-up period of 3 to 8 years (mean of 6.95 ± 1.78 years), the study evaluated esthetic, marginal bone loss (MBL), and biological and prosthetic complications. RESULTS: No failures were recorded during the follow-up period; after eight years, the survival rate was 100%. Patient's age and gender did not have a statistically significant impact on MBL, but smokers had a greater MBL than non-smokers at the 8-year (2.98 mm vs. 1.23 mm, respectively, p = 0.016) time-point. At 3 years, only 13.3% of the implants had mesial papillae, 36.0% had distal papillae, and 16.0% had the cervical metallic part of the abutment exposed. Peri-implantitis was diagnosed in 20.7% of the patients at the 8-year follow-up time. CONCLUSIONS: Based on the limitations of this study, immediate placement and restoration of the mandibular incisors can be a feasible procedure, but only a few implants achieved the complete restoration of the papillae.


Assuntos
Perda do Osso Alveolar , Implantes Dentários , Carga Imediata em Implante Dentário , Humanos , Estudos Retrospectivos , Falha de Restauração Dentária , Estética Dentária , Carga Imediata em Implante Dentário/métodos , Regeneração Óssea , Seguimentos , Perda do Osso Alveolar/cirurgia , Resultado do Tratamento , Implantação Dentária Endóssea
5.
Cureus ; 15(8): e42840, 2023 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-37664263

RESUMO

Ameloblastoma is a benign odontogenic tumor of epithelial origin that exhibits a locally aggressive behavior with a high level of recurrence and multiple factors involved in its molecular pathogenesis. This article is a case report of a 46-year-old male patient suffering from a progressively enlarging tumor of the anterior mandible that caused gradual expansion of the lingual cortical plate and root displacement without resorption of the involved teeth. Incisional biopsy was consistent with "conventional" ameloblastoma, showing a mixed pattern of both the follicular and acanthomatous subtypes. This diagnosis was corroborated through a histopathological examination of the resected specimen. The patient was submitted to en bloc resection (marginal mandibulectomy) with preservation of the lower mandibular border; dental rehabilitation was achieved through a removable prosthesis. He remains disease-free for 5.5 years postoperatively and is highly satisfied with mastication and speech. The objective of this report is to highlight a relatively rare histopathological presentation of the "conventional" ameloblastoma, involving a site not commonly affected by ameloblastomas, the anterior mandible and crossing the midline, in a relatively young male patient.

6.
Cureus ; 15(4): e38084, 2023 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-37122981

RESUMO

Background Dental implants are increasingly being used in the rehabilitation of the edentulous areas in the maxilla and mandible. The anterior mandible is considered a safe zone for implant placement, but clinicians often find it challenging to control bleeding in this area. This is due to the presence of the sublingual artery, which can be of varying dimensions and can cause severe bleeding. This can be of higher significance in patients with high or uncontrolled blood pressure and in patients on blood thinners like Aspirin or Coumadin where establishing a clot can be difficult. With newer guidelines recommending that medication be discontinued only a few hours before surgery and that bleeding be managed locally, this issue has become even more challenging. With three-dimensional (3D) imaging using cone beam computed tomography (CBCT) becoming more common for implant planning, the presence of the sublingual artery can be evaluated and incorporated into the treatment plan. The objective of this study is to evaluate the 3D location of the sublingual artery in the edentulous anterior mandible of CBCT scans of patients referred for dental implant therapy. Methodology A total of 50 de-identified CBCT scans with an edentulous anterior mandible referred for dental implant therapy were evaluated for this study. Cross-sectional images were generated using a CBCT reconstruction program INVIVO-5 (Anatomage, San Jose, CA, USA). After the sublingual artery was localized, measurement was conducted from a standardized point on the alveolar crest to the artery's entry point on the lingual aspect. Measurements were also obtained from the terminal point of the artery's course to the buccal cortical plate. Alveolar crest can either resorb or be subjected to alveoloplasty during implant placement, similar measurements were also done from a standardized point on the inferior cortical border of the mandible to the artery's entry points on the lingual aspect. Two oral and maxillofacial radiologists conducted all measurements. Results It was found that the median value of the sublingual artery from the alveolar crest to the level of entry (V1) was 6.78, the vertical measurement of the artery coursing into the alveolar bone was ~4.03 mm (V2), the vertical measurement of the artery's position within the alveolar bone at the terminal point form the crest was ~11.71 (V3), and the inferior vertical measurement from the course of the artery to the inferior border of the mandible was 9.60 mm. The artery extended about ~8.3 mm within the alveolar bone from the lingual cortex (H1), and the artery was located about 4.97 mm away from the buccal cortex (H2). Cronbach's Alpha test showed high interoperator reliability.  Conclusions In this retrospective study, the sublingual artery was noted to be at a critical location in the potential implant site. A site-specific evaluation using CBCT can help in localizing and avoiding perforation of the sublingual artery.

7.
J Cancer Res Ther ; 18(3): 849-852, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35900574

RESUMO

Metastatic malignant melanoma (MMM) of the oral cavity is extremely rare which generally presents in the setting of disseminated disease and have extremely poor prognosis. The most common site for MMM in the oral cavity is tongue followed by buccal mucosa for soft-tissue lesions and posterior mandible for bone involving lesions. Primary tumor sites of oral MMM are usually cutaneous lesions of the trunk, head and neck, limbs, and nasal septum mucosa. Patients bearing this diagnosis face median survival time of approximately 9 months with a probability of surviving 5 years after the initial presentation is <5%; hence, an early detection and treatment for the primary and metastatic lesion is crucial. Here, we present an unusual case of MMM of oral cavity involving gingiva and alveolar bone of the mandibular anterior region metastasizing from a primary lesion on the foot.


Assuntos
Melanoma , Segunda Neoplasia Primária , Humanos , Mandíbula/diagnóstico por imagem , Mandíbula/patologia , Melanoma/patologia , Mucosa Bucal/patologia , Segunda Neoplasia Primária/patologia , Prognóstico
8.
J Oral Biol Craniofac Res ; 12(5): 505-511, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35783918

RESUMO

Introduction: The purpose of this retrospective study was to determine the visibility, location and other morphometric features of lingual foramina on CBCT along with its age wise and gender wise correlation. Material and methods: A total of 250 patients were included in the study. Cross-sectional CBCT images of the mandible in the midline were used to locate and define each detected lingual foramen and canal. Descriptive statistics including tables and graphs were used. Genderwise and Age wise correlations were analyzed using Chi-square tests. Results: The number, direction, length, diameter, distance from alveolar crest and inferior borders of mandible were evaluated. Genderwise Lingual foramen was most frequently located in the mandibular midline, above genial tubercle (81.7%). Agewise it was found to be significant (p = 0.019). Genderwise length of canal was found to be significant (p = 0.022). Genderwise diameter of canal at midpoint was found to be very highly significant (p < 0.001) and at innermost point was found to significant. (p = 0.037) Genderwise and Agewise distance between orifice of canal and alveolar crest was found to be very highly significant. (p < 0.001) Genderwise and Agewise distance between innermost point of canal and alveolar crest was found to be highly significant (p = 0.001) and very highly significant (p < 0.001) respectively. Conclusion: Clinicians may consider CBCT for procedures with a risk of hemorrhagic and neurosensory complications such as dental implant placement in the anterior mandible.

9.
Materials (Basel) ; 14(18)2021 Sep 09.
Artigo em Inglês | MEDLINE | ID: mdl-34576416

RESUMO

BACKGROUND: Augmentation of the edentulous atrophic anterior region is a challenging situation. The purpose of this article was to evaluate the effectiveness of a collagenated cortical bone lamina of porcine origin for horizontal ridge augmentation in patients with inadequate alveolar ridge width undergoing immediate post-extraction implantation in the anterior sites, and to report on implant survival rates/complications. MATERIALS AND METHODS: The cases were extracted electronically from a large database according to these specific inclusion criteria: patients with inadequate alveolar ridge width in the anterior maxilla or mandible, who underwent immediate post-extraction implant placement and simultaneous alveolar bone reconstruction using xenogeneic cortical bone lamina. An additional layer of palatal connective tissue graft was inserted between lamina and the vestibular mucosa, for improving soft tissue healing. A collagenated bone substitute was additionally placed in the gap between the lamina and implant surface in all patients. The main outcomes were implant survival and complications. RESULTS: Forty-nine patients with 65 implants were included. Patients' mean age at the time of implant surgery was 60.0 ± 13.6 years. The mean follow-up was 60.5 ± 26.6 months after implant placement. The implant survival was 100%. Four postoperative complications occurred in four patients. No specific factor was found to be associated with complication occurrence. CONCLUSION: The use of collagenated cortical bone lamina can be considered as a successful option for alveolar reconstruction in immediate post-extraction implant insertion procedures in anterior regions with inadequate alveolar ridge width.

10.
Quintessence Int ; 52(1): 66-71, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-32954387

RESUMO

Implant dentistry is considered to be a safe and routine surgical procedure. However, cases of life-threatening hematoma of the floor of the mouth resulting in airway obstruction were previously reported as a complication of implant placement in the anterior mandible. Massive bleeding in this anatomical site may be caused by perforating the lingual cortex and/or damaging the lingual perimandibular vessels. In the long term, dental implants can fail, mainly due to peri-implantitis, and must be removed. Explantation procedure may occasionally become a complex challenge, with a risk for various complications.
Case report: This report presents the first case of life-threatening hematoma of the floor of the mouth, as a complication secondary to a failed attempt of dental implant removal at the anterior mandible. The proximity of the implant to the lingual vascular canal might have served as a cause for vascular damage during explantation.
Conclusions: Implant removal complications are scarcely described in the literature. Nonetheless, damaging blood vessels during explantation should not be underestimated. Computed tomography (CT) may be of value not only in preoperative implant planning but also before implant removal in jeopardized anatomical zones such as the anterior mandible. Lingual vascular canals should be looked for on computed tomography scans.

.


Assuntos
Obstrução das Vias Respiratórias , Implantes Dentários , Peri-Implantite , Implantação Dentária Endóssea/efeitos adversos , Implantes Dentários/efeitos adversos , Hematoma/diagnóstico por imagem , Hematoma/etiologia , Humanos , Mandíbula/diagnóstico por imagem , Mandíbula/cirurgia , Soalho Bucal/diagnóstico por imagem
11.
Niger J Clin Pract ; 23(2): 205-211, 2020 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-32031095

RESUMO

AIM: The aim of this retrospective study is to determine the level of visibility of the lingual foramen in panoramic radiography using cone-beam computed tomography (CBCT) as a reference tool. METHOD: A total of 200 patients (111 females and 89 males) were included in the study. Cross-sectional CBCT images of the mandible in the midline were used to locate and define the orifice and diameter of each lingual canal that was detected. The appearance of the lingual foramen in the anterior mandible in panoramic radiography was assessed using a five-point ordinal scale. Descriptive statistics including tables and graphs were used. The correlation between CBCT and panoramic radiography findings were analyzed using Chi-square tests. RESULTS: The lingual foramen was found to be located most frequently in the mandibular midline, above the genial tubercle (78.5%). A narrow-diameter type was found to occur most frequently (56.5%). A prominent genial tubercle was the most commonly found type (57.5%). The lingual foramen could be definitively identified in panoramic radiographs in only 8 cases (4%), while a high degree of probability was found in 25 cases (12.5%). The lingual foramen appears wider and therefore more distinctive in panoramic radiographs when the angulation of the lingual canal is less than 20° to the ground plane. CONCLUSIONS: Radiological evaluation with panoramic radiographs alone may lead to inadequate assessments prior to surgical procedures involving the anterior mandible. Clinicians may consider using three-dimensional imaging for procedures with a risk of hemorrhagic and neurosensory complications such as dental implant placement in the anterior mandible.


Assuntos
Tomografia Computadorizada de Feixe Cônico/métodos , Imageamento Tridimensional , Mandíbula/diagnóstico por imagem , Nervo Mandibular/diagnóstico por imagem , Radiografia Panorâmica/métodos , Adulto , Biometria , Estudos Transversais , Implantes Dentários , Feminino , Humanos , Masculino , Mandíbula/inervação , Mandíbula/cirurgia , Pessoa de Meia-Idade , Interpretação de Imagem Radiográfica Assistida por Computador , Estudos Retrospectivos , Adulto Jovem
12.
Clin Anat ; 33(7): 1102-1108, 2020 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-31688952

RESUMO

The aim of this anatomical study was to investigate the genial spinal canal histologically and to reconstruct it three-dimensionally to improve understanding of its anatomy and to reveal any differences between dentate and edentulous specimens. Two tissue blocks from the mandible between the left and right second incisors, one dentate and one edentulous, were fixed in 4.5% formaldehyde, decalcified and embedded in paraffin. Serial histological sections were prepared, stained with Azan and examined microscopically. Additionally, three-dimensional models of the blocks were reconstructed using microphotographs of the sections. The genial spinal canal in the dentate specimen contained a neurovascular bundle, which branched into a nerve innervating the incisor and a neurovascular bundle, whereas that in the edentulous specimen contained some nerves for vestibular gingival innervation and a vascular bundle. The results suggest differences in the genial spinal canal between dentate and edentulous mandibles. Further research is needed to confirm this finding. Clin. Anat., 33:1102-1108, 2020. © 2019 Wiley Periodicals, Inc.


Assuntos
Mandíbula/anatomia & histologia , Mandíbula/diagnóstico por imagem , Idoso de 80 Anos ou mais , Feminino , Humanos , Imageamento Tridimensional , Masculino
14.
Int J Oral Maxillofac Surg ; 45(9): 1142-6, 2016 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-27184354

RESUMO

The aim of this study was to provide reference information for implantology and chin bone harvesting in people of Han Chinese ethnicity by studying the mandibular incisive canal (MIC) using cone beam computed tomography (CBCT). Fifty subjects were included in the study. CBCT scans were obtained for all subjects, and 22 also underwent panoramic radiography to evaluate the visibility of the MIC. The CBCT data of the 50 subjects were reconstructed to measure MIC diameter, length, and location within the mandible. A MIC was identified in 38.6% of panoramic radiographs, with good clarity in 13.6%, while a MIC was identified in 100% of CBCT images, with good clarity in 63.6%. The diameter of the MIC decreased from origin to end. The left and right average MIC lengths were 17.84mm and 17.73mm, respectively. The MIC was close to the buccal cortical border and lower margin of the mandible. In conclusion, the MIC is an anatomical structure in the mandible that can be identified reliably with CBCT. On insertion, implants should be inclined slightly towards the lingual aspect of the anterior mandible to protect the MIC. The chin bone harvesting depth should be limited to 4mm; the harvesting site can be adjusted to the region above or below the MIC.


Assuntos
Tomografia Computadorizada de Feixe Cônico , Mandíbula/anatomia & histologia , Mandíbula/diagnóstico por imagem , Radiografia Panorâmica , Adulto , China/etnologia , Implantação Dentária , Feminino , Humanos , Masculino , Mandíbula/cirurgia , Estudos Retrospectivos , Coleta de Tecidos e Órgãos/métodos
15.
Natl J Maxillofac Surg ; 5(1): 47-50, 2014 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-25298718

RESUMO

Ameloblastoma or adamantinoma is the rarest of the three forms of tumor of the odontogenic type. They are benign, locally aggressive neoplasms arising from ameloblasts, which typically occur at the angle of the mandible, and are often associated with an un-erupted tooth and must, therefore, be differentiated from a dentigerous cyst which will be centered on the crown. When in the maxilla (less common), they are located in the premolar region, and can extend up in the maxillary sinus. Ameloblastoma is reported to constitute about 1-3% of tumors and cysts of the jaws. The tumor is by far more common in the mandible than in the maxilla and shows predilection for various parts of the mandible in different racial groups. The relative frequency of the mandible to maxilla is reported as varying from 80-20% to 99-1%. Here, we are representing a case of ameloblastoma of anterior mandible which was considered as a rare site of occurrence.

16.
Clin Oral Implants Res ; 25(9): 1022-6, 2014 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-23772703

RESUMO

OBJECTIVES: Single-tooth replacement of anterior mandibular teeth is frequently complicated by insufficient bucco-lingual bone width and limited mesio-distal space available for implant placement. The aim of the present study was to assess implant esthetics in the partially edentulous anterior mandible. MATERIAL AND METHODS: Esthetic evaluation of 43 anterior mandibular single-tooth implants in 15 women and 28 men was performed using esthetic indices (PES = Pink Esthetic Score, PI = Papilla Index, SES = Subjective Esthetic Score) as well as subjective patients' Visual Analogue Scale (VAS) ratings. Clinical and radiological parameters (implant and crown dimensions, pocket depth, bleeding on probing, plaque, keratinized mucosa, marginal bone level, and distance to adjacent teeth) were tested for influence. RESULTS: Implant esthetics were judged satisfactory (PES ≤10) in 42% of implants compared with a patient satisfaction rate of 87%. Correlation between objective indices (PES/PI: rs  = 0.62, PES/SES: rs  = -0.73, PI/SES: rs  = -0.48) was highly significant (P ≤ 0.001); however, no association to subjective patients' ratings could be observed. Type of prosthetic restoration (single crown vs. tulip-shaped double crowns), mesio-distal crown width as well as anatomic crown length significantly affected esthetic scores. Patients' judgment, by contrast, could not be associated to any prognostic factor. CONCLUSION: Subjective patient satisfaction with implant esthetics in the partially edentulous anterior mandible is high, however, remains hard to predict or objectively quantify.


Assuntos
Implantação Dentária Endóssea/métodos , Implantes Dentários para Um Único Dente , Estética Dentária , Mandíbula/cirurgia , Adolescente , Adulto , Idoso , Feminino , Humanos , Arcada Parcialmente Edêntula/cirurgia , Masculino , Pessoa de Meia-Idade , Satisfação do Paciente , Resultado do Tratamento
17.
J Contemp Dent Pract ; 15(6): 775-8, 2014 Nov 01.
Artigo em Inglês | MEDLINE | ID: mdl-25825107

RESUMO

AIM: To report a small intaalveolar ameloblastoma which resembled cystic lesion, and to emphasize the value of Computed tomography (CT) in radiographic examination. BACKGROUND: Ameloblastoma is a slow-growing, locally invasive odontogenic neoplasm that accounts for approximately 10% of all tumors detected in the jaws. Radiographically, those tumors are usually well-defined. Computerized tomography is highly recommended to confirm the diagnosis. CASE DESCRIPTION: A 48-year-old female attended with a chief complaint of painless swelling in the left anterior of mandible, 1 month duration. In intraoral examination, non-fluctuant, immobile, approximately 1 × 1 cm in dimension, painless, swelling which had a bone-like hardness and located in the mandibular canine region was detected. Panoramic radiography revealed a well circumscribed unilocular radiolucent lesion located in the inter-radicular area of left mandibular lateral and canine teeth. In CT examination it was realized that the lesion was multilocular. Histopathological examination of the biopsy specimen was reported as ameloblastoma. CLINICAL SIGNIFICANCE: It is extremely difficult to find such an ameloblastoma in small dimension in alvolar bone.


Assuntos
Ameloblastoma/diagnóstico , Neoplasias Mandibulares/diagnóstico , Processo Alveolar/diagnóstico por imagem , Biópsia/métodos , Dente Canino/diagnóstico por imagem , Arco Dental/diagnóstico por imagem , Diagnóstico Diferencial , Feminino , Humanos , Doenças Mandibulares/diagnóstico , Pessoa de Meia-Idade , Cisto Periodontal/diagnóstico , Radiografia Panorâmica/métodos , Tomografia Computadorizada por Raios X/métodos
18.
Natl J Maxillofac Surg ; 4(1): 100-3, 2013 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-24163563

RESUMO

Dentigerous cyst is a developmental odontogenic cyst, which develops by accumulation of fluid between reduced enamel epithelium and the tooth crown of an unerupted tooth. Dentigerous cysts are usually solitary, slow growing, asymptomatic lesions that are incidentally found during routine radiographs They most frequently involve the mandibular third molar followed in order of frequency by the maxillary canine, mandibular second pre-molar and maxillary third molar. Occasionally, these cysts become painful when infected causing swelling and erythema. The cyst is usually small, however, when large, results in the expansion and thinning of the cortex leading to pathological fracture. Radiographic features are specific to the lesion characterized by a well-defined radiolucency circumscribed by a sclerotic border, associated with the crown of an impacted or unerupted tooth. Dentigerous cysts are treated most commonly by enucleation, Marsupialization and decompression of cyst by fenestration. The criteria for selecting the treatment modality is based on the age, size, location, stage of root development, position of the involved tooth and relation of the lesion to the adjacent tooth and vital structure. The prognosis is an excellent when the cyst is enucleated and recurrence is rare. In this article, we present a case of a Dentigerous cyst in an 80-year-old man in the anterior aspect of the mandible enveloping an impacted canine and crossing the midline but with no clinical expansion or discomfort.

19.
J Oral Biol Craniofac Res ; 2(3): 203-5, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-25737866

RESUMO

Ameloblastoma remains an enigmatic group of oral tumors, inspite of being so frequently encountered and widely discussed. Out of the total ameloblastomas reported, 81% cases have been in the mandible, of which 70% are in the molar-ramus area. We report two cases of ameloblastoma with misguiding radiographic and clinical pictures, which made us ponder that common oral lesions are sometimes, the most tough and confusing to diagnose.

20.
J Maxillofac Oral Surg ; 10(2): 176-80, 2011 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-22654375

RESUMO

OBJECTIVE: Purpose of this study to introduce a new minimal access technique for management of anterior mandible fracture with several advantages over conventional methods. METHOD: Four cases of undisplaced anterior mandibular fracture were selected. Tension band was achieved either by arch bar fixation to mandible or placement of interdental wire followed by intermaxillary fixation. With a 1 cm vertical incision was placed adjacent to fractured line. Fractured segment was immobilized with lag screw with minimal stripping. All patients were followed for 6 months. RESULTS: All four cases shown good stable segment after 6 months of post operative follow up. OPG revealed well placed lag screw and there were no surgical complications, for example parasthesia, scarring and odema. CONCLUSION: Fixation of anterior mandible fracture using this technique can achieve good stability and appropriate compression. The technique is simple and easily performed, reducing the surgical time, reduce the chances of infection due to less exposure and promote the healing process by producing stress in the fracture lines.

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