Comparison Between Rotary and Manual Instrumentation in Primary Teeth

Abstract

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 (I) 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 in 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 of 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.

Comparison between stainless steel and nickel–titanium rotary preparation time for primary molar teeth by endodontists and pedodontists

“…[10,11] The traditional and most common method of pulpectomizing primary teeth as described by Fuks et al [12] involves the use of a series of endodontic files, which are adjusted to stop short of the radiographic apex of each canal, while using canal irrigation. Other methods of pulpectomy using rotary or ultrasonic instrumentation were described [13][14][15] and reported better cleaning and shaping of canals, but some drawbacks, including the cost of the equipment and learning curve needed, were present. Primary teeth are characterized by narrow root canals with a significant curvature.…”

“…The results of the present study were similar to those of previous studies. [14,15] The shortened preparation time using rotary files is not surprising. Fewer rotary files are needed for preparation, and their activity is less time consuming and easier for the operator since they are motor powered.…”

Süt Di̇şleri̇nde Ni̇kel Ti̇tanyum Döner Aletleri̇ni̇n Kullaniminin Değerlendi̇ri̇lmesi̇

“…16 Düşük elastiklik modülleri sayesinde dar süt kanallarına girmeleri kolaylaşmakta ve orijinal kök kanal formu muhafaza edilebilmektedir. 7,19,30 Bunun yanında motor ile aktive olduklarından dolayı daha hızlı kök kanal preparasyonu elde edilebilmektedir. 16 Nikel titanyum döner aletleri sahip oldukları yüksek elastisite özelliklerine rağmen; aletlerin kurvatürlü kanal bölgelerinde karşılaştıkları gerilme ve sıkışma stresleri, metal yüzeyinden taneciklerin kopmasına ve çatlakların yavaş yavaş yayılmasına neden olabilmektedir.…”

Performance de diferentes métodos de instrumentação radicular em dentes decíduos humanos e artificiais avaliado pela tomografia computadorizada por feixe cônico

“…No entanto, o uso de limas acarreta em maior tempo de instrumentação e uma menor efetividade na modelagem e sanificação dos canais (Peters, 2004). Na Odontopediatria, a técnica de instrumentação rotatória foi introduzida há poucos anos (Barr et al, 2000), e alguns estudos em dentes decíduos já compararam as técnicas de instrumentação manual com o sistema rotatório (Silva et al, 2004;Crespo et al, 2008;Kummer et al, 2008;Madan et al, 2011).…”

“…Este tipo de preparo seria mais rápido, eficiente e reduziria o tempo clínico e o esforço físico do profissional (Short et al, 1997;Paque et al, 2010 (Ounsi et al, 2008;Paque et al, 2010). Alguns trabalhos in vitro em dentes decíduos foram previamente publicados utilizando esse tipo de instrumentação e mostraram vantagens, tais como diminuição do tempo clínico e maior conicidade do preparo (Silva et al, 2004;Crespo et al, 2008;Kummer et al, 2008 (Palo et al, 2005;Rasquin et al, 2007). No entanto, o seu uso na instrumentação de canais radiculares de dentes decíduos ainda não foi avaliado.…”