Classic and Current Literature

Which classic study proved bacteria are the primary cause of pulpal/periapical disease using germ-free rats?

Which author popularized the cleaning-and-shaping principles of a continuously tapering prep, maintaining the apical foramen position?

What does the Schneider method quantify in endodontics?

Whose classification system describes common root canal configurations (Types I–VIII)?

Which review emphasized NaOCl for organic tissue dissolution and EDTA for smear layer removal?

Which study linked negative pre-obturation cultures to higher healing rates after RCT?

Which pathogen is most associated with persistent/secondary endodontic infections?

Which cross-sectional study highlighted the importance of coronal restoration quality on periapical status?

Which outcome review identified factors like pre-op periapical status, obturation length/density, and coronal seal as key predictors?

What is the PAI (Periapical Index) used for?

Which material introduced in the 1990s transformed root-end filling due to biocompatibility and sealing in moisture?

Modern endodontic microsurgery shows substantially higher success than traditional techniques primarily due to what?

Which author demonstrated that instrumentation leaves significant untouched canal areas even with rotary NiTi?

Histologic work distinguishing true cysts (self-sustaining) from pocket cysts adherent to the apex is attributed to:

Which classic study linked flare-ups to microbial/host factors rather than “venting” a tooth?

The Strindberg (1956) criteria primarily addressed:

Which finding about obturation length is consistently supported by classic literature?

Which researchers popularized the balanced-force concept to minimize transportation in curved canals?

Which literature body emphasizes that instrumentation alone cannot eradicate biofilms—necessitating irrigant activation?

Which trauma researcher established protocols for replantation timing and ankylosis risk in avulsion?

Which meta-analysis showed modern microsurgery has markedly higher success than traditional apical surgery?

Which author’s work supports partial pulpotomy (Cvek pulpotomy) for traumatic exposures with high success?

What did Weine’s early work primarily contribute to?

Which study is often cited to support the importance of an adequate coronal seal after RCT?

Extraradicular actinomycosis as a cause of persistent apical disease despite good RCT is associated with which author’s work?

Which review concluded no compelling overall difference in outcomes between single-visit and multiple-visit RCT when treatment quality is controlled?

Which literature emphasized MB2 prevalence in maxillary first molars and the value of DOM?

Who introduced MTA and reported its properties such as high pH, biocompatibility, and moisture-tolerant set?

Which outcome framework recommends 6–12-month radiographic review with longer follow-up for apical healing?

Which micro-CT literature finding supports conservative shaping with activated irrigation?

Which concept from Schilder’s work remains central to shaping?

Which classic text/systematic reviews argue that both root filling quality and coronal restoration quality matter for success?

Which statement best reflects evidence on posts and fracture?

Which literature body clarified that CHX has substantivity but no tissue-dissolving ability?

Which study design/tool standardized radiographic outcome assessment across studies?

Who reported that true cysts may require surgical enucleation because they are self-sustaining lesions?

Which researcher(s) helped establish that apical periodontitis is a biofilm disease?

Which author pair emphasized microsurgical principles of 3-mm resection, minimal bevel, ultrasonic retroprep, and bioceramic fill?

Which outcome perspective compares long-term prognosis of retreatment vs surgery based on case selection and restoration?

Which international guideline unequivocally recommends rubber dam isolation for endodontic procedures?

Which landmark paper first introduced nickel–titanium (NiTi) endodontic files for enhanced flexibility in curved canals?

Which author’s clinical series showed markedly higher MB2 detection when using the operating microscope?

Which systematic review set demonstrated that modern microsurgery (DOM, ultrasonics, bioceramics) outperforms traditional apical surgery?

Which classic study linked negative intracanal cultures before obturation with improved healing?

What key message emerged from Ray & Trope’s cross-sectional study?

Which review clarified that NaOCl dissolves organic tissue while EDTA removes the smear layer?

Which micro-CT work showed large portions of canal walls remain untouched by instruments?

Which meta-analysis series identified pre-operative apical periodontitis, obturation quality, and coronal seal as key predictors of success?

Which concept/technique was proposed by Roane to minimize transportation in curved canals?

Which large database study reported high long-term tooth survival after RCT (≈97% at 8 years)?

Which researcher codified cleaning-and-shaping objectives like maintaining original foramen position with a continuously tapering prep?

What is the main conclusion from Siqueira & Rôças regarding intracanal biofilms?

Which classic trauma investigator established replantation timing principles and ankylosis risks?

Which paper popularized the importance of smear-layer removal for dentin permeability/sealer penetration (not necessarily clinical success)?

Which study first described the method for measuring canal curvature angle radiographically?

Which finding about obturation length is most consistently supported by the literature?

Which statement reflects current evidence on single- vs multi-visit RCT outcomes?

Which classic position statements endorse rubber dam as the endodontic standard of care?

Which review/meta-analysis compared traditional vs modern apical surgery and documented improved success with MTA/bioceramics?

Which irrigant-activation review supports ultrasonic activation to enhance debridement and smear removal?

What did Strindberg (1956) primarily contribute?

Which conclusion is supported by studies on apical negative pressure irrigation (e.g., EndoVac)?

Which seminal work clarified that leaving teeth open increases contamination/flare-ups?

Which early clinical report ignited interest in regenerative endodontics for necrotic immature teeth?

Which organism is most linked to refractory secondary infection in previously treated canals?

Which CBCT study showed higher detection of apical periodontitis versus periapicals?

Which position statement guides prudent CBCT use in endodontics?

Which large retrospective study highlighted the importance of coronal sealing after RCT in general practice?

Which classic evidence supports calcium hydroxide as an effective inter-appointment medicament?

Which conclusion is supported regarding reciprocation and instrument fatigue?

Which evidence-based statement about single-cone obturation with bioceramic sealer is most accurate?

Which principle from John West’s writings is central to safe rotary use?

Which concept from Schilder remains critical for apical control?

Which review concluded antibiotics are not effective analgesics for irreversible pulpitis without infection spread?

Which finding about warm vertical compaction vs cold lateral condensation is most defensible?

Which histologic review described true vs pocket cysts and their implications for surgery?

Which irrigation strategy has the strongest support for dissolving organic tissue and disrupting biofilms?

Which study emphasized that untouched canal areas persist regardless of file system, reinforcing the role of irrigant activation?

Which early literature supports partial pulpotomy (Cvek) for traumatic exposures with high success?

Which statement about apical enlargement and bacterial reduction is best supported?

Which classic animal study in monkeys confirmed that apical periodontitis develops only when canals are infected?

Which paired studies demonstrated that instrumentation with NaOCl greatly reduces intracanal bacteria, and interappointment Ca(OH)₂ further improves disinfection?

Histologic evidence that most persistent post-treatment lesions are due to intraradicular biofilm is primarily from whom?

Which outcome analysis highlighted that preoperative apical periodontitis significantly reduces success compared with vital cases?

Long-term survival of endodontically treated teeth is strongly improved by full-coverage restorations according to which study?

Which work emphasized that leaving a tooth open increases contamination and flare-ups?

Which classic microscopy work differentiated periapical true cysts from pocket cysts and clinical implications?

Which investigators established the E. faecalis dentin tubule infection model used to test medicaments?

The PAI (Periapical Index) radiographic scoring system is attributed to:

Which paper provided early population-level evidence that RCT teeth have very high survival (~97% at 8 years)?

What central principle from Schilder’s shaping objectives remains foundational?

Which author popularized the balanced-force hand technique to minimize transportation in curved canals?

Which imaging study showed CBCT detects more apical lesions than periapicals?

Which review concluded that modern microsurgery (DOM, ultrasonics, bioceramics) achieves markedly higher success than traditional surgery?

Which classic study underscored that instrumentation leaves large untouched canal areas—hence the need for active irrigation?

Which work cemented NaOCl for tissue dissolution and EDTA for smear removal as complementary irrigants?

Which classic outcome framework guides 6–12-month recall after RCT to verify healing?

Evidence on single- vs multi-visit RCT when quality/disinfection are controlled shows:

Which paper re-emphasized the critical impact of the coronal restoration on periapical health?

Which trauma researcher established the time-dependent prognosis for avulsed teeth and ankylosis risk?

Which retrospective study showed that iatrogenic errors (e.g., ledges, perforations) reduce retreatment prognosis?

Who introduced MTA and documented its biocompatibility and moisture-tolerant set?

Which literature consistently supports obturation terminating 0–2 mm short of the radiographic apex?

Which reviews established apical periodontitis as a polymicrobial biofilm disease requiring chemical adjuncts?

Which clinical series associated DOM use with higher MB2 detection rates?

Which review supports ultrasonic activation to enhance irrigant effectiveness?

Which classic analysis compared retreatment vs surgery and stressed case selection and coronal seal for comparable outcomes?

Which study linked negative cultures prior to obturation with improved healing?

Which study first introduced NiTi files to endodontics for improved flexibility?

Which author’s work supports partial pulpotomy (Cvek) for small, recent traumatic exposures?

Which conclusion about apical negative pressure systems is evidence-based?

Which systematic reviews identified coronal seal, obturation quality, and pre-op PA status as top predictors of outcome?

Which microbiology paper highlighted E. faecalis adhesion to dentin and persistence potential?

Which work described extraradicular actinomycosis as a cause of persistent apical lesions?

Which concept from Weine’s early work remains clinically relevant?

Which evidence supports that activated NaOCl remains the only routine irrigant capable of dissolving organic tissue?

Which guideline advises limited-FOV, case-based CBCT use in endodontics?

Which literature reported that reciprocation can increase cyclic fatigue resistance compared with continuous rotation?

Which classic endo-perio classification remains widely cited?

Which key message from Ray & Trope is most actionable for clinicians?

Which study first showed that coronal microleakage can compromise root canal outcomes even with good obturation?

In a randomized clinical trial, which comparison found faster short-term healing with surgery but better long-term outcomes with retreatment?

Which review series synthesized indications/properties of MTA across perforations, apexification, and pulp therapy?

Which laboratory body of work demonstrated hydroxyapatite formation/bioactivity of calcium-silicate cements at the dentin interface?

Which classic classification is used to judge radiographic healing after endodontic surgery?

Which author popularized intentional replantation as a predictable option with atraumatic technique?

Which guideline series standardizes modern trauma management (e.g., splint times, replantation)?

Which European guidance codifies quality standards for endodontic treatment and recalls?

The “laws of symmetry, color change, and orifice location” for chamber floor anatomy were described by:

Which meta-analysis reconciled the roles of endodontic quality and coronal restoration, showing both are critical?

Which systematic reviews compared tooth survival vs “healed” success after RCT and highlighted high long-term survival?

Which review summarized mechanisms and patterns of NiTi instrument fracture (torsional vs cyclic fatigue)?

Who popularized modern crown-down NiTi rotary principles in clinical teaching?

Which randomized/surgical series consolidated modern microsurgery steps (3-mm resection, minimal bevel, ultrasonic retroprep, bioceramic fill)?

Which retreatment educator emphasized removal strategies (solvents, ultrasonics, micro-tubes) for posts/GP/silver points?

Which leakage study reinforced coronal seal importance by showing rapid bacterial penetration past obturations?

Which outcome comparisons argue that well-restored endodontically treated teeth rival or exceed single-tooth implant survival?

Which prospective studies estimated persistent pain months after endodontic therapy in a small minority of patients?

Contemporary clinical evidence on full pulpotomy for symptomatic irreversible pulpitis in mature molars shows:

Which meta-analysis estimated low overall flare-up rates and no clear advantage of single vs multiple visits?

Which authors stressed that tooth survival after RCT is strongly influenced by cuspal coverage?

Which clinical study reported high success of perforation repair with MTA?

Which classic histologic author detailed extraradicular biofilms/actinomycosis as reasons for persistent lesions?

Which micro-CT work underscored that even with varied systems, significant canal wall areas remain untouched?

Which guidance limits CBCT use to case-based, limited-FOV indications in endodontics?

Which paper formalized the Periapical Index (PAI) for standardized radiographic scoring?

Which study series demonstrated that warmed NaOCl improves tissue dissolution efficacy?

Which authors established that instrumentation with NaOCl reduces bacteria and that Ca(OH)₂ interappointment enhances disinfection?

Which review clarified CHX’s substantivity but lack of tissue-dissolving capacity?

Which anatomy framework remains standard for describing canal configurations (Types I–VIII)?

Which classic observation supports obturation 0–2 mm short of apex for best prognosis?

Which microbiology authors framed apical periodontitis as a biofilm disease necessitating chemical adjuncts?

Which clinical literature emphasizes the role of missed MB2 canals in maxillary first molar failures and the benefit of DOM?

Which restorative concept is most supported by classic evidence for strengthening endo-treated teeth?

Which systematic review/meta-analysis documented higher success of modern endodontic microsurgery vs traditional surgery?

Which study cautioned that leaving teeth open increases contamination and flare-ups?

Which database analysis provided population-level evidence of ~97% 8-year survival of RCT teeth?

Which imaging study showed CBCT detects more periapical lesions than periapicals?

Which balanced-force concept helps minimize transportation in curved canals?

Which classic animal/human histology strengthened the view that infection is essential for apical periodontitis development and persistence?

Who first described long-term calcium hydroxide apexification for immature necrotic teeth?

Which clinical trial showed occlusal reduction reduces postoperative pain in teeth with SIP and apical periodontitis?

Which landmark evidence linked bacteria to pulpal inflammation under restorations?

Which review concluded warm NaOCl increases tissue-dissolving capacity?

Which authors emphasized apical negative pressure (e.g., EndoVac) reduces irrigant extrusion and improves WL exchange?

Which review established passive ultrasonic irrigation improves debridement over syringe irrigation?

Who reported that removing the smear layer improves sealer adaptation and dentin permeability?

Which study warned that coronal microleakage can rapidly contaminate filled canals?

Which trial popularized single-file reciprocation concept for canal shaping?

Which outcome paper stressed comparable long-term success of retreatment vs surgery with proper case selection?

Which authors created a dentin tubule infection model widely used to test medicaments against E. faecalis?

Which classic cracked tooth paper described clinical signs and diagnostic features of CTS?

Which work demonstrated higher MB2 detection with DOM and ultrasonics in retreatment?

Which meta-analysis compared survival of RCT teeth vs implants and found comparable outcomes with proper selection?

Which literature established the CBCT periapical index (CBCTPAI)?

Who synthesized the properties/indications of MTA across pulp therapy, perforations, and root-end fills?

Which study showed instrumentation plus NaOCl dramatically reduces bacterial counts, with Ca(OH)₂ further improving disinfection?

Which classic study series documented untouched canal wall percentages via micro-CT, regardless of file system?

Which trauma authority established time-dependent ankylosis risk after avulsion?

Which review clarified CHX’s substantivity but lack of tissue dissolution?

Which randomized comparison found surgery faster to initial healing but retreatment better long-term?

Which paper reinforced that leaving teeth open increases contamination/flare-ups?

Which study emphasized the ferrule effect as critical for fracture resistance of endo-treated teeth?

Which classic evidence supports Ca(OH)₂ as an effective interappointment medicament?

Which investigators detailed extraradicular actinomycosis causing persistent lesions?

Which paper summarized NiTi fracture mechanisms and lifecycle management (torsional vs cyclic fatigue)?

Which restorative study linked cuspal-coverage crowns to increased survival of root-treated teeth?

Which CBCT guidance recommends limited FOV and case-by-case justification in endodontics?

Which author established partial pulpotomy (Cvek) success for small recent traumatic exposures?

Which early paper introduced NiTi files for endodontic use due to superior flexibility?

Which literature compared traditional vs microsurgery and showed improved outcomes with ultrasonic retroprep and bioceramics?

Which study confirmed CBCT detects more periapical lesions than periapicals?

Which endo–perio classification is still widely referenced clinically?

Which trauma guidance standardizes splint durations and replantation protocols?

Which classic paper first detailed laws of chamber anatomy to aid conservative access?

Which review underscored that both endodontic quality and coronal restoration are critical to outcomes?