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Evaluation of Instrumentation Time and Obturation Quality Using Two Different Pediatric Rotary File Systems in Primary Molar Pulpectomy

28. června 2026 aktualizováno: Rania Fathy Mohammed Mohammed, Cairo University

Evaluation of Instrumentation Time and Obturation Quality Using Two Different Pediatric Rotary File Systems in Primary Molar Pulpectomy :(A Randomized Clinical Trial)

Preserving primary teeth is essential for maintaining normal chewing, speech development, and psychological well-being. Successful pulpectomy depends on effective chemomechanical preparation of the root canals while preserving their original anatomy. Although hand files are traditionally used for canal preparation in primary teeth, they are time-consuming and may increase the risk of procedural errors. Nickel-titanium (Ni-Ti) rotary systems have gained popularity because they improve canal shaping and reduce instrumentation time. Among these systems, Pediatric NiTi rotary files manufactured with AF-H Wire technology and Pediatric NiTi rotary files manufactured with blue Wire technology are specifically designed for pediatric use. However, evidence regarding their clinical performance remains limited, highlighting the need to compare their effectiveness, particularly in terms of instrumentation time and obturation quality

Přehled studie

Postavení

Zatím nenabíráme

Podmínky

Pulpektomie

Intervence / Léčba

Typ studie

Intervenční

Zápis (Odhadovaný)

Fáze

Nelze použít

Kontakty a umístění

Tato část poskytuje kontaktní údaje pro ty, kteří studii provádějí, a informace o tom, kde se tato studie provádí.

Studijní kontakt

Jméno: Rania F. Mohamed, bachelor
Telefonní číslo: +01000416751
E-mail: rania.fathy@dentistry.cu.edu.eg

Kritéria účasti

Výzkumníci hledají lidi, kteří odpovídají určitému popisu, kterému se říká kritéria způsobilosti. Některé příklady těchto kritérií jsou celkový zdravotní stav osoby nebo předchozí léčba.

Kritéria způsobilosti

Věk způsobilý ke studiu

Dítě

Přijímá zdravé dobrovolníky

Ano

Popis

Inclusion Criteria:

Healthy Cooperative children.
Children between the ages of four and eight years.
Restorable teeth with irreversible pulpitis.
Continuous bleeding after amputation of coronal pulp tissue.

Exclusion Criteria:

Molars that exhibit physiologic root resorption in excess of one-third.
Internal and external root resorption.
Presence of dental abscess, sinus tract or excessive mobility.
Acute spreading infection/cellulitis not manageable with local treatment.
Large periapical/furcation lesion with poor prognosis.
Teeth close to natural exfoliation.
Children with known allergies to study materials or medications used.

Studijní plán

Tato část poskytuje podrobnosti o studijním plánu, včetně toho, jak je studie navržena a co studie měří.

Jak je studie koncipována?

Detaily designu

Primární účel: Léčba
Přidělení: Randomizované
Intervenční model: Paralelní přiřazení
Maskování: Dvojnásobek

Počet zbraní

Zbraně a zásahy

Skupina účastníků / Arm	Intervence / Léčba
Aktivní komparátor: Pediatric NiTi rotary files manufactured with AF-H Wire technology Pediatric NiTi rotary files manufactured with AF-H Wire technology are designed to improve flexibility and cyclic fatigue resistance while facilitating efficient canal preparation. Clinical studies have reported significantly reduced instrumentation time using this rotary system compared with conventional hand instrumentation. Furthermore, the system has demonstrated favorable canal shaping ability and a high percentage of optimally obturated canals, indicating its effectiveness in pediatric pulpectomy procedures	Přístroj: Pediatric NiTi rotary files manufactured with AF-H Wire technology After preoperative radiographic assessment and administration of local anesthesia, lower primary molars will be isolated using a rubber dam and caries will be removed. Working length will be determined radiographically, and root canal preparation will be performed using pediatric NiTi rotary files manufactured with AF-H Wire technology with 1% sodium hypochlorite irrigation between files. Instrumentation time will be recorded throughout the procedure. The canals will then be dried and obturated with Metapex and zinc oxide eugenol, followed by restoration with glass ionomer cement and a stainless steel crown. Obturation quality will be evaluated postoperatively using digital radiography according to the Coll and Sadrian criteria.
Experimentální: Pediatric NiTi rotary files manufactured with blue wire technology Pediatric NiTi rotary files manufactured with blue wire technology are a newer pediatric rotary system developed using blue heat-treated NiTi technology. Heat treatment enhances flexibility, resistance to cyclic fatigue, and fracture resistance, which are important characteristics when preparing the curved canals of primary teeth. Laboratory studies have shown that blue wire pediatric rotary files exhibit excellent mechanical properties and superior cyclic fatigue resistance compared with several other pediatric rotary systems. However, clinical evidence evaluating its performance in terms of instrumentation efficiency and obturation quality remains limited.	Přístroj: Pediatric NiTi rotary files manufactured with blue wire technology After preoperative radiographic assessment and administration of local anesthesia, lower primary molars will be isolated using a rubber dam and caries will be removed. Working length will be determined radiographically, and root canal preparation will be performed using blue technology wire rotary files with 1% sodium hypochlorite irrigation between files. Instrumentation time will be recorded throughout the procedure. The canals will then be dried and obturated with Metapex, followed by restoration with glass ionomer cement and a stainless steel crown. Obturation quality will be evaluated postoperatively using digital radiography according to the Coll and Sadrian criteria.

Skupina účastníků / Arm

Intervence / Léčba

Aktivní komparátor: Pediatric NiTi rotary files manufactured with AF-H Wire technology

Pediatric NiTi rotary files manufactured with AF-H Wire technology are designed to improve flexibility and cyclic fatigue resistance while facilitating efficient canal preparation. Clinical studies have reported significantly reduced instrumentation time using this rotary system compared with conventional hand instrumentation. Furthermore, the system has demonstrated favorable canal shaping ability and a high percentage of optimally obturated canals, indicating its effectiveness in pediatric pulpectomy procedures

Přístroj: Pediatric NiTi rotary files manufactured with AF-H Wire technology

After preoperative radiographic assessment and administration of local anesthesia, lower primary molars will be isolated using a rubber dam and caries will be removed. Working length will be determined radiographically, and root canal preparation will be performed using pediatric NiTi rotary files manufactured with AF-H Wire technology with 1% sodium hypochlorite irrigation between files. Instrumentation time will be recorded throughout the procedure. The canals will then be dried and obturated with Metapex and zinc oxide eugenol, followed by restoration with glass ionomer cement and a stainless steel crown. Obturation quality will be evaluated postoperatively using digital radiography according to the Coll and Sadrian criteria.

Experimentální: Pediatric NiTi rotary files manufactured with blue wire technology

Pediatric NiTi rotary files manufactured with blue wire technology are a newer pediatric rotary system developed using blue heat-treated NiTi technology. Heat treatment enhances flexibility, resistance to cyclic fatigue, and fracture resistance, which are important characteristics when preparing the curved canals of primary teeth. Laboratory studies have shown that blue wire pediatric rotary files exhibit excellent mechanical properties and superior cyclic fatigue resistance compared with several other pediatric rotary systems. However, clinical evidence evaluating its performance in terms of instrumentation efficiency and obturation quality remains limited.

Přístroj: Pediatric NiTi rotary files manufactured with blue wire technology

After preoperative radiographic assessment and administration of local anesthesia, lower primary molars will be isolated using a rubber dam and caries will be removed. Working length will be determined radiographically, and root canal preparation will be performed using blue technology wire rotary files with 1% sodium hypochlorite irrigation between files. Instrumentation time will be recorded throughout the procedure. The canals will then be dried and obturated with Metapex, followed by restoration with glass ionomer cement and a stainless steel crown. Obturation quality will be evaluated postoperatively using digital radiography according to the Coll and Sadrian criteria.

Co je měření studie?

Primární výstupní opatření

Měření výsledku	Popis opatření	Časové okno
instumentation time Časové okno: same visit while performing the pulpectomy	The total instrumentation time will be recorded from the start of the procedure until the canals are fully prepared. Timing will begin with the insertion of the first file and will end after the final irrigation. It will be measured in minutes using a stopwatch	same visit while performing the pulpectomy

Sekundární výstupní opatření

Měření výsledku	Popis opatření	Časové okno
obturation quality Časové okno: same visit after pulpectomy completion	The quality of obturation will be evaluated according to the criteria of Coll and Sadrian criteria (1996). The apical seal will measured in millimeters from the apical end of the canal filling material to the radiographic apex and scored as 1, 2, or 3. Apical seal Score 1 (Underfilling): was defined as filling in all canals extending more than 2 mm short of the apex. Score 2 (Ideal filling) was considered when the material reached up to 2 mm short of the radiographic apex or reached the working length in one or more canals. Score 3 (Overfilling) was recorded when the obturating material extended beyond the radiographic apex. Voids Obturated canals will be assessed for the presence or absence of voids.	same visit after pulpectomy completion

Spolupracovníci a vyšetřovatelé

Zde najdete lidi a organizace zapojené do této studie.

Sponzor

Cairo University

Vyšetřovatelé

Ředitel studie: Sara A. Mahmoud, Professor, Cairo University

Termíny studijních záznamů

Tato data sledují průběh záznamů studie a předkládání souhrnných výsledků na ClinicalTrials.gov. Záznamy ze studií a hlášené výsledky jsou před zveřejněním na veřejné webové stránce přezkoumány Národní lékařskou knihovnou (NLM), aby se ujistily, že splňují specifické standardy kontroly kvality.

Hlavní termíny studia

Začátek studia (Odhadovaný)

1. září 2026

Primární dokončení (Odhadovaný)

1. června 2027

Dokončení studie (Odhadovaný)

1. září 2027

Termíny zápisu do studia

První předloženo

20. června 2026

První předloženo, které splnilo kritéria kontroly kvality

24. června 2026

První zveřejněno (Aktuální)

29. června 2026

Aktualizace studijních záznamů

Poslední zveřejněná aktualizace (Aktuální)

1. července 2026

Odeslaná poslední aktualizace, která splnila kritéria kontroly kvality

28. června 2026

Naposledy ověřeno

1. června 2026

Více informací

Termíny související s touto studií

Klíčová slova

Další identifikační čísla studie

CU-rania-2026

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Informace o lécích a zařízeních, studijní dokumenty

Studuje lékový produkt regulovaný americkým FDA

Studuje produkt zařízení regulovaný americkým úřadem FDA

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Evaluation of Instrumentation Time and Obturation Quality Using Two Different Pediatric Rotary File Systems in Primary Molar Pulpectomy