Surgical Retreatment
Fig. 7.1 (a) Radiograph of an upper lateral incisor with a long parallel post showing an incomplete root canal filling and a periapical radiolucency. Endodontic treatment options can either be…
Non-surgical Retreatment
Fig. 8.1 (a) Tooth 36 is symptomatic after root canal treatment. (b) X-ray in distal angulation suggests the presence of an untreated mesial-lingual canal. (c) Reamer 02 ISO 15 in…
Aetiology of Persistent Endodontic Infections in Root-Filled Teeth
Fig. 3.1 Ecological moments that determine the selection of a post-treatment root canal community. Environmental disturbances such as mechanical instrumentation, irrigation with antimicrobials and inter-appointment medication cause a simplification of…
Incidence, Frequency, and Prevalence
Study Country Radiograph Sample PrevalenceRF (%) PrevalenceAP (%) FrequencyAP total (%) FrequencyAP RF (%) Bergenholtz et al. [34] Sweden Apical/FMR Patient 57 6.1 30.5 Boltacz-Rzepkowska [35] Poland Apical/FMR Patient…
Decision Making
Fig. 6.1 A decision tree logically displaying alternative actions in the management of root-filled teeth with apical periodontitis 6.3 Variation in Endodontic Retreatment Decision Making In a benchmark , experimental…
Consequences
© Springer International Publishing AG 2018 Thomas Kvist (ed.)Apical Periodontitis in Root-Filled Teethhttps://doi.org/10.1007/978-3-319-57250-5_4 4. Consequences Fredrik Frisk1, 2 and Thomas Kvist2 (1) Department of Endodontology, Institute for Postgraduate Dental Education, Jönköping, Sweden (2) Department of Endodontology,…
Introduction
Disease Illness Sickness Phenomena studied Pathophysiological, histological, microbiological, and radiographic events Pain, swelling, or other symptoms present now or in the future Criteria for classification and grading of disease…
Therapeutic Options for the Management of Fractured Instruments
Fig. 4.1 Nonrestorable roots of a mandibular second molar with a fragment in the apical third of the distal root. Tooth extraction is the treatment of choice in this case…
Complications During Attempts of Retrieval or Bypassing of Fractured Instruments
Fig. 7.1 (a) Preoperative radiograph. (b) Fractured instrument in the apical third of the curved distal root of a first mandibular molar. (c) Root perforation and creation of “iatrogenic” canal…
Factors Affecting Intracanal Instrument Fracture
Factors affecting intracanal instrument fracture Operator related Skill, proficiency, judgment Anatomy related Access cavity Root canal anatomy Instrument related Material Design Manufacturing process and errors Technique/use related Motors operating parameters…
Introduction: Prevalence of Fractured Instruments
Fig. 1.1 Fragments of various endodontic instruments Fig. 1.2 (a) Fragment of an irrigation needle in the mesiobuccal root canal of a maxillary molar. (b) Fragment of the notched end…
Mechanisms of Instrument Failure
Fig. 3.1 Image showing H-files discarded after clinical use due to plastic deformation of the cutting tip Fig. 3.2 Distribution of fractured and plastically deformed instruments within different ISO sizes…
Prognosis of Root Canal Treatment with Retained Instrument Fragment(s)
Study Lesiona No lesion Healing (%) Effect on healing Strindberg (1956) 2/4 9/11 11/15 (73%) Overall 19% reduction (although lower when lesion is present) Grahnén and Hansson (1961) NR NR…
Parameters Influencing the Removal of Fractured Instruments
Fig. 5.1 (a) Preoperative radiograph of a mandibular right first molar with a fragment in the middle third of the mesial root. (b, c) Operative microscope photographs of the pulp…
Prevention
Steps Procedure First Ten vigorous strokes in a scouring sponge soaked in 0.2% chlorhexidine solution Second 30-min presoak in an enzymatic cleaning solution Third 15-min ultrasonication in the same solution…
Comparative Evaluation of Techniques and Devices for the Removal of Fractured Instruments
Author(s) Study design and sample size Methods, devices, instruments, techniques, and protocol used Microscope Definition of success Success rate Shiyakov and Vasileva (2014) In vivo (n = 26) Ultrasonics Yes…
Complications
Fig. 4.1 Large MODB pin-retained amalgam restoration. The loss of original occlusal anatomy landmarks and pulp canal space calcification will make this a more challenging tooth to access for root…
Relationship
Fig. 10.1 Anatomic relationship between pulp and periodontium In case of endodontic lesions, the pathway of inflammation is through the apical foramen, furcation canals, and lateral accessory canals to the…
