Publications by authors named "Espasa E"

Background: Molar-incisor-hypomineralisation (MIH) is a disturbance in dental development that commonly involves first permanent molars but permanent incisors may also be compromised. The prevalence of MIH in the literature varies between 2.5% and 40% of the world child population.

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Aim: Molar-incisor hypomineralization is a disturbance in dental development that involves first permanent molars as well as permanent incisors with a prevalence that ranges from 2.5% to 40%. The objective of this study was to investigate the etiology of molar-incisor hypomineralization among school children from two randomly selected towns in the province of Barcelona, Spain.

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Aim: To analyze the existing variability on molar incisor hypomineralization prevalence in the literature; to distinguish the various molar incisor hypomineralization prevalence rates in different countries, areas, and regions of the world; and to know the valid diagnostic criteria used for the correct identification of molar incisor hypomineralization prevalence.

Study Design: A literature review from Medline and Cochrane Library online databases was performed using five terms individually or in combination. Articles not reporting diagnostic criteria employed and articles not written English were excluded.

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Mouth and oropharynx cancer constitute 5% of all malignancies; 95% of them are head and neck squamous cell carcinomas. Carcinogenesis is a multifactor process. Mutagenesis is also determined by the human papilloma virus which has recently been found to be etiologically associated with 20 to 25% of head and neck squamous cell carcinomas, mostly in the oropharinx.

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Mucoceles are benign lesions of the minor salivary glands that are common in children. The most frequent localizations of these lesions include the lower lip and the cheek mucosa. Such mucoceles are caused by traumas, the rubbing of orthodontic devices, or biting habits.

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Dental impaction defines a tooth that, instead of erupting to occupy its functional position, is partially or totally retained and remains within the bone. Retained teeth can be placed in the normal arch position through a combination of orthodontics and conventional surgical techniques, or a combination of orthodontics and laser surgery, as in the case here presented of a 14-year-old boy with an impacted first mandibular premolar, covered by bone, and with complete root formation and an erupted second premolar. The impacted premolar was surgically exposed using an Er,Cr:YSGG laser and at the same time an orthodontic bracket was bonded to provide traction to move the first premolar into its arch position.

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Background: Little information is available regarding the eruption chronology of Spanish children. Therefore, it is important to acquire accurate eruption parameters for the Spanish population.

Aim: To establish the chronology of the permanent dentition.

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Dentigerous cysts are benign maxillary odontogenic cysts associated with the crown of an unerupted tooth. They can expand the cortical bone to such an extent that they cause displacement of teeth and root resorption in the adjacent teeth. The purpose of this report was to describe the clinical case of a dentigerous cyst in a mandibular permanent molar of a 6-year-old child.

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Squamous cell papilloma is a benign proliferation of the stratified squamous epithelium. It is typically an exophytic lesion smaller than 1 cm. Its appearance varies from cauliflower-like to fingerlike, while the base may be pedunculated or sessile.

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Eruption cysts are benign cysts that appear on the mucosa of a tooth shortly before its eruption. The majority disappear on their own. If they hurt, bleed or are infected they may require surgical treatment to expose the tooth and drain the content.

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Aims: These were to firstly evaluate the shear bond strength of a composite resin to primary dental enamel treated with a standard adhesive system but with varying phosphoric acid etching times along with a self-etching prime, secondly to analyse the etching patterns using SEM.

Methods: Forty primary molars were used. In the first three groups, following acid etching, a layer of Prime & Bond NT adhesive was employed, and in group 4 the self-etching adhesive system (Prompt-L-Pop) was used.

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Article Synopsis
  • The study aimed to assess how different prophylaxis methods and etching times affect the retention of a light-cured sealant on extracted third molars.
  • Eighty third molars were divided into eight groups based on two prophylaxis types (pumice powder, fluoridated paste, sodium bicarbonate spray, and control) and varying etching times (30 seconds and 15 seconds).
  • Results showed no significant difference in retention between the two etching times, but sodium bicarbonate and fluoridated paste demonstrated significantly better sealant retention compared to other prophylaxis methods.
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