Effect of sonic and ultrasonic retrograde cavity preparation on the integrity of root apices of freshly extracted human teeth: scanning electron microscopy analysis

Eudes Gondim Jr; Brenda Paula Figueiredo Almeida de Gomes; Caio Cesar Randi Ferraz; Fabricio Batista Teixeira; Francisco José de Souza-Filho

doi:10.1097/00004770-200209000-00005

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Effect of sonic and ultrasonic retrograde cavity preparation on the integrity of root apices of freshly extracted human teeth: scanning electron microscopy analysis

Journal article

Peer reviewed

Effect of sonic and ultrasonic retrograde cavity preparation on the integrity of root apices of freshly extracted human teeth: scanning electron microscopy analysis

Eudes Gondim Jr, Brenda Paula Figueiredo Almeida de Gomes, Caio Cesar Randi Ferraz, Fabricio Batista Teixeira and Francisco José de Souza-Filho

Journal of endodontics, Vol.28(9), pp.646-650

09/2002

DOI: 10.1097/00004770-200209000-00005

PMID: 12236308

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Abstract

Sonic and ultrasonic root-end preparation devices permit the preparation of conservative and straight cavities. However, microfractures and marginal chipping can occur due to the vibratory action of such instruments. The purpose of this study was to evaluate the effect of retrograde preparations by using sonic and ultrasonic tips on the integrity of root-end surfaces. Eighty, human anterior teeth were grouped according to size and treated as follows: treatment 1: root-end resection (RR) and root-end cavity preparation (RP) with KIS ultrasonic retrotip; treatment 2: RR and RP with Satelec S12/90 (no diamond coating) ultrasonic retrotip; treatment 3: RR and RP with a diamond-coated retrotip attached to a sonic device (Sonics); treatment 4: RR and RP with Satelec S12/90D (diamond coated) ultrasonic retrotip. The root-end surface topographies were assayed by means of polyvinylsiloxane impressions and epoxy resin replicas. SEM pictures of each sample were taken before and after preparation, and the images were evaluated by using an image processing and analysis system. The parameters evaluated were shape quality, presence of cracks, and marginal chipping. The results showed no statistically significant differences among anatomic groups, treatments, or tooth sizes (p > 0.05). Because treatment 3 removed more dental structure than the others did, its use on small teeth is inadvisable.

Humans

Statistics as Topic

Minerals

Equipment Design

Tooth Apex - ultrastructure

Apicoectomy - methods

Surface Properties

Dental Impression Materials

Dental Pulp Cavity - injuries

Root Canal Preparation - instrumentation

Replica Techniques

Microscopy, Electron, Scanning

Dental Pulp Cavity - ultrastructure

Siloxanes

Tooth Apex - injuries

Dentin - ultrastructure

Diamond

Root Canal Preparation - methods

Sound

Epoxy Resins

Apicoectomy - instrumentation

Ultrasonics

Image Processing, Computer-Assisted

Polyvinyls

Dental Cementum - ultrastructure

Details

Title: Subtitle: Effect of sonic and ultrasonic retrograde cavity preparation on the integrity of root apices of freshly extracted human teeth: scanning electron microscopy analysis
Creators: Eudes Gondim Jr - Endodontic Unit, School of Dentistry of Piracicaba, State University of Campinas-UNICAMP-Piracicaba-SP, Brazil
Brenda Paula Figueiredo Almeida de Gomes
Caio Cesar Randi Ferraz
Fabricio Batista Teixeira
Francisco José de Souza-Filho
Resource Type: Journal article
Publication Details: Journal of endodontics, Vol.28(9), pp.646-650
DOI: 10.1097/00004770-200209000-00005
PMID: 12236308
NLM abbreviation: J Endod
ISSN: 0099-2399
eISSN: 1878-3554
Publisher: Elsevier Inc; United States
Language: English
Date published: 09/2002
Academic Unit: Endodontics
Record Identifier: 9984065976202771

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