Odontic periapical pressure following vital pulp extirpation

Mohorn, Harold Wayne; Dowson, John; Blankenship, John W.

doi:10.1016/0030-4220(71)90350-1

Cited by 34 publications

(17 citation statements)

References 16 publications

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“…Results may also differ because of positive and negative pressures at the apex and also according to whether normal or pathological periapical tissues are present. 34 In an in vivo study, Salzgeber and Brilliant 35 demonstrated that vital tissues helped control the apical and lateral penetration of an irrigating solution. In necrotic tissues, the solution is randomly dispersed when extended into the periapical lesion.…”

Section: Discussionmentioning

confidence: 98%

Comparative study of apically extruded debris using one manual and two rotary instrumentation techniques for endodontic retreatment

Kuştarcı¹,

Altunbaş²,

Akpınar³

2012

Journal of Dental Sciences

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Background/purpose: The aim of the this study was to compare the amount of debris apically extruded during endodontic retreatment using two rotary nickeletitanium (NiTi) instruments (K3 and R-Endo) and Hedström files. Materials and methods: Forty-five extracted human mandibular premolar teeth were used in this study. Root canals of the teeth were filled before being randomly assigned to three groups. In group 1, gutta-percha was removed with K3 (SybronEndo, West Collins, CA, USA) rotary NiTi instruments. In group 2, gutta-percha was removed with R-Endo (Micro-Mega, Besançon, France) rotary NiTi instruments. In group 3, gutta-percha was removed using Hedström files (Dentsply Maillefer, Ballaigues, Switzerland). Debris extruded from the apical foramen was collected into Eppendorf tubes. The liquid inside the tubes was dried, and the debris in each group was weighed and compared. Data were statistically analyzed using one-way analysis of variance, and KruskaleWallis test and ManneWhitney U test. Results: Although all retreatment techniques resulted in apical extrusion, groups 1 and 2 produced significantly less apical extrusion than group 3 (P < 0.05). No statistically significant difference was found between groups 1 and 2 (P > 0.05). Conclusion: All retreatment techniques produced extruded debris during endodontic retreatment; however, both rotary NiTi systems were associated with less apical extrusion than manual instrumentation with Hedström files.

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Section: Discussionmentioning

confidence: 98%

Comparative study of apically extruded debris using one manual and two rotary instrumentation techniques for endodontic retreatment

Kuştarcı¹,

Altunbaş²,

Akpınar³

2012

Journal of Dental Sciences

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“…The solution was distributed over random portions of the rarefied areas, suggesting a higher risk for apical extrusion in teeth/roots with necrotic pulps. Mohorn et al (54) measured a negative pressure below atmospheric pressure at some time in the periapical tissues of mongrel dogs following vital pulp extirpation, but could not obtain constant results over the complete period of measurement. However, it is well known that inflammation results in increased tissue pressure, which in endodontics might be expected in cases of apical periodontitis.…”

Section: Irrigation Hydrodynamics Irrigation Pressure and Tissue Prmentioning

confidence: 99%

Complications during root canal irrigation

Hülsmann¹,

Rödig²,

Nordmeyer³

2007

Endodontic Topics

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Although endodontic irrigants are generally considered to be safe, severe complications can occur during or as a consequence of root canal irrigation. However, no data on the incidence of irrigation incidents could be found. In the following paper, a review is presented on the possible incidents that may occur during root canal irrigation with different irrigation solutions, the sequelae, as well as prevention and therapy of such intra‐ and post‐operative problems.

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“…In the present investigation, there was no pulp tissue inside the root canal as well as no periapical tissues that might act as a barrier against AED. However, it has been reported that periapical tissue might act to either reduce or increase the amount of AED (38). Therefore, comparing postoperative pain after the use of various concentrations of NaOCl might be useful to compare AED in the clinical setting.…”

Section: Discussionmentioning

confidence: 97%