Abstract
Two cases are reported to present the “Burrow platform” (BP) technique. The BP technique
uses a partial platform for retrieving instrument fragments, thereby reducing the
loss of radicular dentin.The BP technique is a microscope-aided approach implementing
coated ultrasonic tips to create an access to instrument fragments in the middle and
apical thirds of the root canal. The technique consists of 4 steps: (1) coronal access,
(2) radicular access, (3) partial platform, and (4) exposure of the fragment and retrieval.
A precise, angulated access pathway is specific to the BP technique. In the coronal
half, the radicular access pathway extends toward the outer wall of the curvature.
In the apical half, the radicular access pathway is oriented toward the inside of
the curvature. One and 4 instrument fragments were successfully retrieved in the respective
cases. At follow-up, all teeth were asymptomatic and had responded favorably to the
treatment.The BP technique may present a suitable alternative to fragment removal
from curved canals and slender roots to avoid ledge formation, transportation, and
perforation. Instrument retrieval using the BP technique can be performed using commonly
available armamentarium.
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References
- The impact of instrument fracture on outcome of endodontic treatment.J Endod. 2005; 31: 845-850
- Prevalence and management of instrument fracture in the postgraduate endodontic program at the dental school of Athens: a five-year retrospective clinical study.J Endod. 2008; 34: 675-678
- Influence of several factors on the success or failure of removal of fractured instruments from the root canal.Endod Dent Traumatol. 1999; 15: 252-258
- Influence of combined cyclic fatigue and torsional stress on the fracture point of nickel-titanium rotary instruments.J Endod. 2013; 39: 133-137
- K3 Endo, ProTaper, and ProFile systems: breakage and distortion in severely curved roots of molars.J Endod. 2004; 30: 234-237
- The dilemma of the fractured instrument.J Endod. 1983; 9: 515-516
- Endodontic treatment of root canals obstructed by foreign objects.Int Endod J. 1986; 19: 2-10
- Questionnaire survey on the use of rotary nickel-titanium endodontic instruments by Australian dentists.Int Endod J. 2004; 37: 249-259
- Complications associated with fractured file removal using an ultrasonic technique.J Endod. 2005; 31: 450-452
- Rotary NiTi instrument fracture and its consequences.J Endod. 2006; 32: 1031-1043
- Management of intracanal separated instruments.J Endod. 2013; 39: 569-581
- A comparison of three methods for preparing centered platforms around separated instruments in curved canals.J Endod. 2006; 32: 48-51
- Clinical decision-making after endodontic instrument fracture.Br Dent J. 2013; 214: 395-400
- Nonsurgical retreatment.in: Hargreaves K.M. Berman L.H. Cohen’s Pathways Pulp Expert Consult. 11th ed. Elsevier Inc., St Louis, MO2016: 324-386
- Nonsurgical retreatment.J Endod. 2004; 30: 827-845
- Ultrasonics in endodontics: a review of the literature.J Endod. 2007; 33: 81-95
- Vertical fracture resistance of roots after ultrasonic removal of fractured instruments.Int Endod J. 2010; 43: 424-429
- Probability of removing fractured instruments from root canals.Int Endod J. 2005; 38: 112-123
- Removal of separated files from root canals with a new file-removal system: case reports.J Endod. 2006; 32: 789-797
- Evaluation of an ultrasonic technique to remove fractured rotary nickel-titanium endodontic instruments from root canals: an experimental study.J Endod. 2003; 29: 756-763
- A new approach for the retrieval of broken instruments.J Endod. 1999; 25: 633-635
- Factors associated with the removal of fractured NiTi instruments from root canal systems.Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2004; 98: 605-610
- A comparison of canal preparations in straight and curved root canals.Oral Surg Oral Med Oral Pathol. 1971; 32: 271-275
- Special committee to revise the joint. AAE and AAOMR joint position statement: use of cone beam computed tomography in endodontics 2015 update.Oral Surg Oral Med Oral Pathol Oral Radiol. 2015; 120: 508-512
- European society of endodontology position statement: use of cone beam computed tomography in endodontics: European Society of Endodontology (ESE) developed by.Int Endod J. 2019; 52: 1675-1678
- Detection of fractured endodontic instruments in root canals: comparison between different digital radiography systems and cone-beam computed tomography.J Endod. 2017; 43: 544-549
- Evaluation of an ultrasonic technique to remove fractured rotary nickel-titanium endodontic instruments from root canals: clinical cases.J Endod. 2003; 29: 764-767
- The outcome of retained instrument removal in a specialist practice.Int Endod J. 2010; 43: 545-554
- Temperature rise on the external root surface during removal of endodontic fractured instruments.Clin Oral Investig. 2014; 18: 1135-1140
- Temperature threshold levels for heat-induced bone tissue injury: a vital-microscopic study in the rabbit.J Prosthet Dent. 1983; 50: 101-107
- Micro-endodontic nonsurgical retreatment.Dent Clin North Am. 1997; 41: 429-454
- Comparison of the different techniques to remove fractured endodontic instruments from root canal systems.Eur J Dent. 2009; 3: 90-95
- Removal of broken files from root canals by using ultrasonic techniques combined with dental microscope: a retrospective analysis of treatment outcome.J Endod. 2011; 37: 619-622
- Analysis of temperature rise and the use of coolants in the dissipation of ultrasonic heat buildup during post removal.J Endod. 2010; 36: 1892-1896
- Temperature rise on the surface of NiTi and stainless steel fractured instruments during ultrasonic removal.Int Endod J. 2015; 48: 872-877
- Success rates for removing or bypassing fractured instruments: a prospective clinical study.J Endod. 2012; 38: 442-444
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Published online: July 20, 2021
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