Low-Level Laser Therapy Approach of Bilateral Necrotizing Sialometaplasia of the Hard and Soft Palates

Introduction: Necrotizing sialometaplasia (NS) is a rare locally destructive inflammatory benign disease that commonly affects the minor salivary glands. It is frequently associated with the glands located in the posterior portion of the hard and soft palates. Low-level laser therapy (LLLT), also called photobiomodulation therapy (PBMT), has been deemed a substantial method for the regenerative wound process.Case Presentation: A 32-year-old male patient was referred with a chief complaint of two asymptomatic crater-like ulcers measuring approximately 1.5 cm wide on the right side of the hard and soft palates, and another measuring 0.3 cm wide on the left side of the hard palate. The lesion had two weeks of evolution followed by a previous infectious “sore throat” event that kept the patient hospitalized for 4 days. A clinical diagnosis of NS was made. LLLT was applied during 2 sessions per week, favoring the total wound healing within 2 weeks. At 3 months of clinical follow-up, the patient did not present any complication or relapse and was thus released.Conclusion: This is, to our knowledge, the first clinical report of LLLT applied for the management of NS. Large palatal ulcers caused by NS usually have long healing periods. The shortened healing period observed in this case encourages the inclusion of LLLT in any treatment protocol for similar lesions

Efficacy of the NaviTip FX irrigation needle in removing calcium hydroxide from root canal

Objective: To evaluate the effectiveness of the NaviTip FX, brush-covered irrigation needle, in removing calcium hydroxide from the root canal. Study Design: Thirty single-rooted teeth were randomly divided into three groups: A - irrigation with a hypodermic needle inserted as far as possible without binding and activation with #30 K-type file; B - Irrigation with a hypodermic needle without activation; C - irrigation with NaviTip FX needle. Sodium hypoclorite 1% was used in irrigation. The root canals were examined trough scanning electron microscopy. Calcium hydroxide removal was recorded at 1, 5, and 10mm from the working length (WL) and the data were analysed using one-way ANOVA test (p<0.05). Results: NaviTip FX and hypodermic needle activated with #30K-type file showed lower score at 10 and 5mm with no significant difference between them. Comparison within groups did not show significant differences. All groups showed significantly better smear layer removal at 5 and 10 mm from the WL. Conclusion: The apical third (1mm) of the root canal was found to be the most critical site for Ca(OH)2 removal

Sialadenoma papilliferum : bibliometric analysis

Sialadenoma papilliferum is a benign rare condition of salivary glands showing a characteristic papillary growth of the ductal epithelium that ends up being confused with more frequent lesions of the oral cavity. Objectives: To perform a bibliometric analysis of all articles about Sialadenoma papilliferum in the oral cavity and to add a singular case report of Sialadenoma in the lower lip. A total of 36 publications referring to Sialadenoma papilliferum in the oral cavity from the PubMed platform was reviewed. The specific data were collected, and a bibliometric analysis was performed using Microsoft Excel. The results obtained were then compared with this new case report. The people most affected with sialadenoma were white males at the average age of 56. The lesion was asymptomatic, usually white or red, with an average size of 1.4 cm, and the palate was by far the most affected site. The majority of the lesions were excised, and only two cases indicated recurrence. With surgical removal, Sialadenoma papilliferum has a favorable prognosis and no further treatment is required. Due to few recorded cases of recurrence, a long follow-up period is recommended to ensure that the lesion does not redevelop

Evaluation of subcutaneous and alveolar implantation surgical sites in the study of the biological properties of root-end filling endodontic materials

OBJECTIVE: The aim of this study was to compare two methodologies used in the evaluation of tissue response to root-end filling materials in rats. MATERIAL AND METHODS: Forty rats were divided into 4 groups: in Groups I and II (control groups), empty polyethylene tubes were implanted in the extraction site and in the subcutaneous tissue, respectively; in Groups III and IV, polyethylene tubes filled with ProRoot MTA were implanted in the extraction site and in the subcutaneous tissue, respectively. The animals were killed 7 and 30 days after tube implantation, and the hemi-maxillas and the capsular subcutaneous tissue, both with the tubes, were removed. Specimens were processed and evaluated histomorphologicaly under light microscopy. The scores obtained were analyzed statistically by the Kruskal-Wallis test (

A scanning electron microscopic study of hypercementosis

The purpose of this study was to evaluate morphological characteristics of teeth with hypercementosis that are relevant to endodontic practice. Twenty-eight extracted teeth with hypercementosis had their root apexes analyzed by scanning electron microscopy (SEM). The teeth were divided according to tooth groups and type of hypercementosis. The following aspects were examined under SEM: the contour and regularity of the root surface; presence of resorption; presence and number of apical foramina, and the diameter of the main foramen. The progression of club shape hypercementosis was directly associated with the presence of foramina and apical foramen obstruction. Cases of focal hypercementosis presented foramina on the surface, even when sidelong located in the root. Circular cementum hyperplasia form was present in 2 out of 3 residual roots, which was the highest proportion among the tooth types. The detection of a large number of foramina in the apical third of teeth with hypercementosis or even the possible existence of apical foramen obliteration contributes to understand the difficulties faced during endodontic treatment of these cases

Chronic Sclerosing Sialadenitis (Kuttner Tumor) in the sublingual gland: unusual manifestation related to partial edentulism and chronic masticatory trauma.

Chronic sclerosing sialadenitis or Küttner tumor is an unusual chronic inflammatory disease of the salivary gland that mimics a malignant neoplasm clinically because of presentation as a hard mass. The diagnosis can only be made histologically and is an underrecognized entity. Recent studies have shown important features that characterizes the disease mainly as an autoimmune reaction. The aim of this work is to report a case of a 40-year-old man, presenting with a three-year history of a painless, moderate sublingual mass related to a partial edentulism of the teeth 36 and 37. Functional evaluation revealed an awkward misplacement of the mass into the edentulous site. Clinical and radiographic procedures revealed a decreased salivary flow and no signs of remarkable pain or sialolithiasis. Sublingualectomy was performed and histopathological examination confirmed the presence of nonobstructive chronic sclerosing sialadenitis of the sublingual gland. The possible autoimmune reaction triggered by hidden (sequestered) antigens exposed by chronic masticatory trauma is discussed

Frequency of the palatogengival groove and morphologic analysis of the root canals of affected teeth before and after root canal preparation

O sulco palatogengival representa uma anomalia com morfologia propícia ao acúmulo de microorganismos e possibilidade de comunicação com a cavidade pulpar, podendo acarretar em doença periodontal localizada, cárie dentária, pulpopatias e periapicopatias. Investigou-se a etiopatogenia, seus meios de diagnóstico para colaborar na determinação de prognósticos precisos baseados na detecção das dificuldades do manejo dessas situações clínicas decorrentes. Detectou-se sua freqüência em 500 pacientes, correlacionando sua presença com características pessoais e sua ocorrência na família de indivíduos portadores. Também foram utilizados 20 incisivos permanentes superiores portadores do sulco palatogengival avaliando macro e microscopicamente a morfologia dos canais radiculares antes e depois do preparo biomecânico, bem como a relação do compartimento pulpar com o meio externo. Os espécimes foram observados macroscopicamente, com o auxílio do estereomicroscópio, radiografados e analisados à microscopia eletrônica de varredura antes e depois do preparo biomecânico utilizando a técnica de mufla modificada de BRAMANTE et al.. A prevalência do sulco palatogengival na amostra de 500 pacientes avaliados, foi de 19,8%, sendo que o dente mais afetado foi o incisivo lateral superior com 80,4% de prevalência, ocorrendo tanto unilateralmente quanto bilateralmente. Observou-se a prevalência de 8,4% de doenças relacionadas ao sulco. Não se detectou diferenças entre gêneros e cor de pele, quanto à presença do defeito. Não foi observada nenhuma correlação entre a presença do sulco palatogengival e as características físicas avaliadas. Identificou-se a presença do sulco palatogengival em pessoas de uma mesma família. A análise de 20 incisivos superiores com sulco palatogengival permitiu a identificação de forames, foraminas e túbulos dentinários no leito do sulco palatogengival, comunicando o compartimento pulpar com o periodontal. Identificaram-se alterações no contorno e variações do tipo de junção amelocementária. O desgaste produzido pela instrumentação dos canais nos dentes da amostra foi uniforme, não havendo diferenças significantes entre as paredes instrumentadas nem nos fragmentos cervical, médio e apical dos canais. A parede dentinária atingida pelo sulco palatogengival foi a mais fina antes e depois do preparo biomecânico.The palatogengival groove represents an anomaly with favorable morphology to the accumulation of microorganisms and possible communication with the pulp chamber, leading to localized periodontal disease, dental caries, pulp and periapical diseases. It was aimed to investigate the origin, the diagnostic means and to collaborate for determination of prognostic measures based on the detection of difficulties with handling of the current clinical situations related to the groove. The frequency in 500 patients was evaluated, correlating the presence of the groove with individual characteristics end its presence in the family of the bearers. Also 20 permanent previously extracted upper incisors with the palatogengival groove were evaluated as to the root canal morphology macro and microscopically, before and after root canal preparation. The relationship of the pulp chamber with the external environment, in these specimens was evaluated. The specimens were observed macroscopically, by means of stereomicroscope, x-ray and analyzed through scanning electronic microscopy before and after root canal preparation using a modified muffle technique from BRAMANTE et al.. The prevalence of the palatogengival groove in 500 patients, was of 19,8%, and the most affected tooth was the upper lateral incisor with 80,4% of prevalence, with unilateral and bilateral manifestation. It was detected the prevalence of 7,8% of groove related diseases. It was not detected differences between gender and skin color, with the presence of the defect. No correlations were observed between the presence of the palatogengival groove and the studied physical characteristics. It was identified the presence of the palatogengival groove in patients of the same family. The analysis of 20 upper incisors with palatogengival groove allowed the identification foramen, foraminas and exposed dentinal tubules in the radicular surface of the groove, communicating the pulp chamber with the periodontal compartment. Alterations in the outline and variations of the type of the cement enamel junction were also detected. The dentin removal produced by root canal instrumentation of the studied teeth was uniform, with no significant differences among the different dentinal walls or in the cervical, medium and apical fragments of the analyzed teeth. The dentinal wall related to the palatogengival groove was thinner before and after the root canal preparation compared with the remaining dentinal walls