Browsing by Subject "Primary teeth"

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    Comparison between rotary and manual instrumentation in primary teeth.
    (2008) Crespo, Susana; Cortés, Olga; García, Carlos; Pérez, Leonor; Dermatología, Estomatología, Radiología y Medicina Física
    The aim of this study was to compare the efficiency in both, preparation time and root canal shape, when using the Nickel Titanium (Ni-Ti) rotary and K-Files hand instrumentation on root canal preparation of single rooted primary teeth. Material and methods: Sixty single rooted primary teeth were selected and divided into two equal groups: Group (1) 30 teeth instrumented with manual K- files and group (II) 30 teeth instrumented with Ni-Ti rotary files (ProFile 0.04). Instrumentation times were calculated and root canal impressions were taken with light bodied silicone in order to evaluate the shape. The data was analyzed with SPSS program using the t-test and the Chi-square test to compare their means. Results: The preparation time with group (I) K- files was significantly higher than ni group (II) rotary files (ProFile 0.04), with a=p .005. The ProFile system showed a significantly more favorable canal taper when compared to the K-files system (P= 002) Conclusions: The use o f rotary files in primary teeth has several advantages when compared with manual K files: the efficiency in both, preparation time and root canal shape. 1. A decreased working time, that helps maintain patient cooperation by diminishing the potential for tiredness. 2. The shape of the root canal is more conical, favoring a higher quality of the root canal filling, and increasing clinical success
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    Developmental dental defects in permanent teeth resulting from trauma in primary dentition: a systematic review
    (MDPI, 2022-01-10) Caeiro-Villasenín, Lucía; Serna-Muñoz, Clara; Pérez-Silva, Amparo; Vicente-Hernández, Ascensión; Poza-Pascual, Andrea; Ortiz Ruiz, Antonio José; Dermatología, Estomatología, Radiología y Medicina Física
    The objective was to determine whether trauma in primary dentition causes alterations in the development of permanent dentition. Searches were made in May 2020 using PubMed, MEDLINE, MEDES, Scopus, Lilacs, and Embase. Papers in English, German, and Spanish, without restrictions in the year of publication, were included. The quality of the studies was analyzed using the NOS Scale. The search retrieved 537 references, and seven studies were included for a qualitative analysis. The results showed that trauma to a deciduous tooth can damage the bud of the permanent tooth. Enamel discoloration and/or hypoplasia were the most common sequelae in the permanent teeth after trauma to the primary predecessor. The type and severity of sequelae in the permanent tooth are associated with the development phase of the bud. Children with trauma of their primary teeth should receive checkups until the eruption of the permanent teeth for the early diagnosis and treatment of possible sequelae. Intrusion of the primary tooth was the trauma that caused the most damage and enamel alterations the most frequent sequelae.
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    Shear bond strength of a self etching adhesive in primary and permanent dentition.
    (2005) Germán, Concepción; García, Carlos; Pérez, Leonor; Cortés, Olga; Dermatología, Estomatología, Radiología y Medicina Física
    To assess the shear bond strength obtained with a new self-etching adhesive material (Adper Prompt-L-Pop) compared with the total-etch technique and posterior application of an adhesive (Prime &Bond NT)in both primary and permanent teeth. Methods: 82 human teeth were selected (14 primary and 14 permanent). The vestibular and lingual surfaces were prepared in dentin, followed by application of the adhesive materials (Adper Prompt-L-Pop and Prime &Bond NI), in accordance with the instructions of the manufacturer. Compomer and composite (Compoglass and TPH Spectrum) were used as filer materials. The samples were thermocycled (150 cycles), after which adhesion was assessed with an Autograph AGS machine. The type of fracture produced was evaluated using an Olympus SCZ-CTV microscope. The data were compared by triple-factor analvsis of variance, statistically significant differences being considered for