Histogenetic aspects of the composition and structure of human ectopic enamel, studied by scanning electron microscopy

Gaspersic, D

doi:10.1016/0003-9969(92)90122-o

Cited by 12 publications

(17 citation statements)

References 29 publications

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“…1,5 Nevertheless, most of the pearls are enamel-dentin pearls, where the enamel layer caps a core of dentine. 1,5,16,21 Some larger EPs may contain pulp tissue also, and these have been called enamel-dentin-pulp pearls. 1 The major diameter of the pearls ranged from 1.15 mm to 4.48 mm, with a mean of 1.98 mm, which is in accordance with previous studies.…”

Section: Discussionmentioning

confidence: 99%

“…The most acceptable theory is that the pearl develops because of a localized developmental activity of the Hertwig's epithelial root sheath cells that remained adherent to the root surface during root development differentiating into functioning ameloblasts. 1,3,6,15,16 The EP has been evaluated in vivo and ex vivo using conventional radiography 2,6,17 and cone beam CT (CBCT). 10 In the last decade, micro-CT (mCT) has gained increasing significance as a non-invasive reproducible method for three-dimensional (3D) assessment of dental hard tissues.…”

Section: Introductionmentioning

confidence: 99%

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Enamel pearls in permanent dentition: case report and micro-CT evaluation

Versiani

Cristescu²,

Saquy³

et al. 2013

Dentomaxillofacial Radiology

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Objectives: To investigate the frequency, position, number and morphology of enamel pearls (EPs) using micro-CT (mCT) and to report a case of an EP mimicking an endodonticperiodontic lesion. Methods: Cone beam CT (CBCT) was performed in a patient to evaluate a radio-opaque nodule observed on the left maxillary first molar during the radiographic examination. Additionally, 23 EPs were evaluated regarding frequency, position, number and morphology by means of mCT. The results were statistically compared using the Student's t-test for independent samples. Results: 1 pearl was presented in 13 specimens, while 5 specimens presented 2 pearls. The most frequent location of the EPs was the furcation between the disto-buccal and the palatal roots of the maxillary molars. Overall, the mean major diameter, volume and surface area were 1.98 6 0.85 mm, 1.76 6 1.36 mm 3 and 11.40 6 7.59 mm 2 , respectively, with no statistical difference between maxillary second and third molars (p . 0.05). In the case report, CBCT revealed an EP between the disto-buccal and the palatal roots of the maxillary first left molar associated with advanced localized periodontitis. The tooth was referred for extraction. Conclusions: EPs, located generally in the furcation area, were observed in 0.74% of the sample. The majority was an enamel-dentin pearl type and no difference was found in maxillary second and third molars regarding diameter, volume and surface area of the pearls. In this report, the EP mimicked an endodontic-periodontic lesion and was a secondary aetiological factor in the periodontal breakdown.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Enamel pearls in permanent dentition: case report and micro-CT evaluation

Versiani

Cristescu²,

Saquy³

et al. 2013

Dentomaxillofacial Radiology

View full text Add to dashboard Cite

show abstract

“…Pearls also may exhibit hypomineralized areas (4), but generally show a degree and pattern of mineralization, hardness, and chemical context similar to coronal enamel (11-13). Radiographically, the enamel pearls appear as well-defined radiopaque nodules, along the root’s surface, comparable in radiodensity to the enamel of the crown (1,3,10).…”

Section: Discussionmentioning

confidence: 99%

Evaluation of enamel pearls by cone-beam computed tomography (CBCT)

Akgül¹,

Çağlayan²,

Durna³

et al. 2012

Med Oral

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Objective: The aim of this study was to evaluate the frequency of enamel pearls according to population, sex and tooth groups on Cone-Beam Computed Tomography (CBCT) or Dental Volumetric Tomography (DVT) scans of patients, retrospectively. Study Design: In this study, 15185 teeth belonging to 768 patients, 430 female and 338 male, was performed cross-sectional examination by CBCT. The volumetric Computed Tomography used in the study is Newton FP based on flat-panel. The data were analyzed with Pearson chi-squared test. Results: Enamel pearls were detected in 36 subjects (4.69%). Of these enamel pearls, 19 were detected in male and 17 were in male. There was no statistically a significant association between prevalence of enamel pearls and sex. All of enamel pearls were detected in molar teeth, for prevalence 0.83%. Conclusion: All of enamel pearls are found upper and lower molar teeth, especially the most commonly in maxillary second and third molars. Key words: Enamel pearls, ectopic mineralization, radiography, CBCT, DVT.

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“…Gaspersic[21] denied the role of heredity and stressed that local mechanical factors play the prime role in the genesis of enamel pearls. He further stated that the folding of HERS near root furrows, particularly in third molars, may occur due to lack of arch space, initiating amelogenesis and ectopic enamel formation.…”

Section: Discussionmentioning

confidence: 99%

Enamel pearl on an unusual location associated with localized periodontal disease: A clinical report

Sharma¹,

Malhotra²,

Baliga³

et al. 2013

J Indian Soc Periodontol

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Bacterial plaque has been implicated as the primary etiologic factor in the initiation and progression of periodontal disease. Anatomic factors (such as enamel pearls) are often associated with advanced localized periodontal destruction. The phenomenon of ectopic development of enamel on the root surface, variedly referred to as enameloma, enamel pearl, enamel drop or enamel nodule, is not well-understood. Such an anomaly may facilitate the progression of periodontal breakdown. A rare case of enamel pearl on the lingual aspect of mandibular central incisor associated with localized periodontal disease is presented. Removal and treatment of enamel pearl along with possible mechanisms to account for the pathogenesis of ectopic enamel formation are also discussed.

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Histogenetic aspects of the composition and structure of human ectopic enamel, studied by scanning electron microscopy

Cited by 12 publications

References 29 publications

Enamel pearls in permanent dentition: case report and micro-CT evaluation

Enamel pearls in permanent dentition: case report and micro-CT evaluation

Evaluation of enamel pearls by cone-beam computed tomography (CBCT)

Enamel pearl on an unusual location associated with localized periodontal disease: A clinical report

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