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Biomedical subjects

J H Damante

Publications and source records attributed to J H Damante.

At least 19 recordsLinked to original sources
PubMed2002

Spontaneous resolution of simple bone cysts.

OBJECTIVE: To determine whether spontaneous resolution of simple bone cysts (SBC) is possible. METHODS: Ten patients were diagnosed as SBC on clinical and radiographic criteria and followed up for 1 to 7 years (mean 3.8). The degree of resolution was assessed subjectively by four radiologists and objectively by changes in the grey level histogram. RESULTS: All cases remained asymptomatic over the follow-up period. One of the lesions was considered static, two were increased, six remodeled and one resolved. The mean difference in grey levels between the lesion and the contralateral normal mandible decreased in 8 out of 10 cases. CONCLUSION: It is probable that SBC resolves spontaneously. A protocol for clinical and radiographic diagnosis and follow-up is proposed.

Adolescent↗
PubMed2001

An anatomical and radiographic study of medial depression of the human mandibular ramus.

OBJECTIVES: To determine the prevalence of the medial depression of mandibular ramus (MDMR) in dry human mandibles and in clinical panoramic radiographs and to compare the prevalence in dentoskeletal deformities with Angle Class I occlusion. METHODS: Two hundred and fifty-one dry skulls and three groups of patients were used for this study: Group 1 consisted of 1358 panoramic radiographs from a general population, Group 2, 426 radiographs from individuals with Angle class I occlusion and Group 3283 individuals with dentoskeletal deformities. The prevalence of MDMR was determined in the skulls and each group and the shape from the radiographs alone. RESULTS: The prevalence of MDMR in dry mandibles was 33.9% (bilateral in 13.1% and unilateral in 20.8%). MDMR was found in 276 radiographs (20.3% - Group 1 - bilateral in 40% and unilateral in 59.5%). MDMR was more common in Group 3 compared with Group 2 (chi(2)=35.98 P<0.01). A triangular MDMR was the most frequent (39.7%). CONCLUSION: MDMR is a relatively common finding in panoramic radiographs. Patients with dentoskeletal deformities have a higher prevalence of MDMR and this should be taken into consideration if orthognathic surgery is proposed.

Adolescent↗
PubMed2001

Gastroesophageal reflux disease: New oral findings.

OBJECTIVE: The objective of this study was to investigate the effects of gastroesophageal reflux disease (GERD) on dentition, salivary function, and oral mucosa. STUDY DESIGN: Thirty-one patients with esophagitis underwent medical evaluation, which included taking their medical history, performing both an esophagogastroduodenoscopy and esophagus biopsy, and conducting a stomatologic examination. The latter consisted of an extraoral and intraoral physical examination, saliva tests (flow, buffer capacity, and pH), and biopsy and morphometry of the palatal mucosa, as well as taking a history of the patients' habits. Fourteen healthy volunteers from the same population were used as a control group. RESULTS: No relationship between GERD and changes in the oral cavity was shown by saliva tests, oral clinical examination, or histopathologic examination of the palatal mucosa. However, morphometric analysis of the palatal epithelium showed a statistically significant difference between the patients with GERD and the control group. CONCLUSIONS: GERD is associated with microscopic alterations in the palatal mucosa (epithelial atrophy and increased fibroblast number), which are only detected by morphometry.

Adult↗
PubMed2001

The image of the hard palate/nasal fossa floor in panoramic radiography: the controversy is over.

OBJECTIVE: The aim of this investigation was to obtain further information about the anatomic structures involved in the formation of the upper image of the hard palate/nasal fossa floor (HP/NFF). STUDY DESIGN: Three dry human skulls underwent ostectomies along the HP midline (ie, the area of the junction of the nasal septum with the nasal fossa floor) and along posterior portions of the HP/NFF (ie, the horizontal plates of the palatine bones and part of the palatine processes of the maxillae). The radiographs were digitized and preostectomy and postostectomy optical densities were measured. Preostectomy and postostectomy optical densities were also measured. RESULTS: Partial disappearance of the upper image occurred after ostectomy of the junction of the nasal septum with the NFF. Total disappearance occurred only after bilateral ostectomy of the posterior portions of the HP/NFF. The mean increases in regional optical density in terms of pixel gray level after the ostectomies were 70.44%, 72.27%, and 51.40%. CONCLUSIONS: The junction of the nasal septum with the NFF and the posterior portions of the HP/NFF form the upper image of the HP/NFF. Most of the image is real, although a small part is a ghost image of the horizontal plates of the palatine bones and of the posterior region of the palatine processes of the maxillae.

Artifacts↗
PubMed1998

Radiographic image of the hard palate and nasal fossa floor in panoramic radiography.

OBJECTIVE: The aim of this investigation was to report on the radiographic interpretation of the hard palate and nasal fossa floor in panoramic radiographs by studying different skulls, x-ray machines, and head positions in relationship to the Frankfort plane before and after ostectomy. STUDY DESIGN: Twenty dry human skulls were radiographed with three different panoramic x-ray machines in three different positions. Three of the skulls were submitted to different ostectomies. RESULTS: Multiple images of the hard palate and nasal fossa floor were present in 96.12% of the radiographs. Single images (3.88%) occurred only in the "chin up" position. CONCLUSIONS: The lower image represents the nasal fossa floor, especially its lateral and anterior limits. The upper images are double real images mainly formed by the junction of the nasal septum with the nasal fossa floor and possibly by posterior parts of the hard palate and nasal fossa floor. All images overlap in the "chin up" position becoming a single image. The most common shape of the anatomic landmark was wide angle "W" (58.33%). Other shapes present in positions "chin up" and "chin down" indicate patient positioning errors. The x-ray machines did not influence the results.

Cephalometry↗
PubMed1984

Contribution of radiographs to the diagnosis of naso-alveolar cyst.

Eight cases of nasoalveolar cyst are reported; seven of these cases demonstrated radiographically identifiable changes. The literature is reviewed, and clinical and cytologic characteristics of the lesions are discussed. The importance of radiographs in the diagnosis of nasoalveolar cysts is emphasized.

Adult↗
PubMedDate not supplied

A contribution to the diagnosis of the small dentigerous cyst or the paradental cyst.

The aim of this study was to verify the relationship between the radiographically measured width of the pericoronal space (PS) and the microscopic features of the follicle in order to contribute to the diagnosis of small dentigerous cysts and paradental cysts. One hundred and thirty unerupted teeth (UT) and thirty-five partially erupted teeth (PET) were radiographed and extracted. The radiographic analysis consisted of measuring the width of the PS. The results of the radiographic analysis were compared with those of the histopathologic examination of the dental follicle. The width of the PS ranged from 0.1 to 5.6 mm. The most frequently observed lining of the follicles was a reduced enamel epithelium (REE) (68.4%) in UT and a hyperplastic stratified squamous epithelium (HSSE) (68.5%) in PET. Inflammation was present in 36.1% of the UT and in 82.8% of the PET. There was a statistically significant association between the presence of stratified squamous epithelium (SSE) and PS enlargement for UT (p < 0.05). There was a tendency of association between inflammation and PS enlargements in PET and, possibly, in UT, despite the absence of statistical significance. Surgically, we did not detect bone cavitation or luminal cystic contents in pericoronal spaces smaller than 5.6 mm. We suggest that the first radiographic diagnosis for a PS enlargement, in most of the routine clinical cases, should be of "inflammation of the follicle". The hypothesis of "dentigerous cyst" or "paradental cyst" is suggested as a second diagnosis. The final differential diagnosis between a small dentigerous or a paradental cyst and a pericoronal follicle depends on clinical and/or surgical findings, such as the presence of bone cavitation and cystic content.

Adult↗