Lesson 1Interappointment medication and dressing (calcium hydroxide): indications and protocolsThis section explains indications for interappointment medication, focusing on calcium hydroxide. It covers placement techniques, contact time, dressing materials, temporary sealing, and protocols for retreatment or persistent exudation in local practices.
Indications for calcium hydroxide useMixing and placement techniquesDuration of intracanal medicationManagement of persistent exudationDressings in retreatment casesRemoval of calcium hydroxide before fillLesson 2Irrigation fundamentals: sodium hypochlorite concentration and activation (ultrasonic, sonic), EDTA use, irrigation safetyThis section reviews irrigation goals, sodium hypochlorite concentrations, and EDTA use. It explains needle selection, activation methods such as ultrasonic and sonic, irrigation sequences, and safety measures to prevent extrusion and accidents in Botswana.
Biologic goals of root canal irrigationSodium hypochlorite concentration choicesEDTA timing and smear layer removalNeedle design and irrigation depthUltrasonic and sonic activation methodsPreventing irrigant extrusion accidentsLesson 3Rubber dam isolation: techniques for posterior teeth, clamps selection, and isolation troubleshootingThis section reviews rubber dam armamentarium, clamp selection, and isolation techniques for posterior teeth. It addresses common challenges such as malpositioned teeth, broken crowns, and limited opening, plus tips for patient comfort and safety.
Rubber dam components and setupClamp selection for molars and premolarsPunching and placing dam for quadrantsIsolation in broken or carious crownsManaging limited mouth openingPreventing leakage and soft tissue injuryLesson 4Working length determination: apex locator use, radiographic confirmation, handling unusual root morphologyThis section covers working length concepts, apex locator principles, and stepwise clinical use. It includes radiographic confirmation, troubleshooting inconsistent readings, and adapting techniques for resorption, open apices, and complex root forms in Botswana.
Apical constriction and reference pointsApex locator setup and calibrationClinical steps with apex locatorsRadiographic verification techniquesManaging open apices and resorptionTroubleshooting erratic readingsLesson 5Canal location strategies: knowledge of mesial root anatomy, groove locations, ultrasonics for troughingThis section focuses on systematic canal location using knowledge of root anatomy and grooves. It highlights mesial root landmarks, use of ultrasonics for troughing, staining and magnification, and strategies to avoid perforation while searching.
Anatomic landmarks in mandibular molarsMesial root and groove orientationTroughing with ultrasonics safelyUse of dyes and magnification aidsManaging calcified chamber floorsAvoiding strip and furcation perforationLesson 6Magnification and illumination: selection and ergonomics of loupes vs operating microscope, practical benefitsThis section discusses selection and ergonomic use of loupes and operating microscopes. It covers magnification levels, illumination options, posture, and how enhanced vision improves canal location, crack detection, and overall treatment precision in Botswana.
Choosing magnification levels and opticsLoupes versus operating microscopeCoaxial illumination and light settingsErgonomic positioning and postureUsing magnification for canal locationMaintenance and infection controlLesson 7Obturation techniques for molar canals: warm vertical compaction, carrier-based systems, single cone with sealer—selection criteriaThis section compares obturation techniques for molar canals, including warm vertical compaction, carrier-based systems, and single cone with bioceramic sealer. It covers case selection, armamentarium, and steps to achieve dense, three-dimensional fills.
Criteria for timing of obturationWarm vertical compaction workflowCarrier-based obturation indicationsSingle cone with bioceramic sealerRadiographic evaluation of obturationManaging voids and underfillsLesson 8Coronal seal and provisional restoration: materials and techniques to prevent reinfectionThis section explains principles of coronal sealing after endodontic therapy. It reviews provisional materials, access restoration techniques, strategies to prevent microleakage, and how temporary and definitive seals influence long-term outcomes in Botswana.
Importance of immediate coronal sealSelection of temporary materialsTechniques for sealing access cavitiesPreventing microleakage and washoutTransition to definitive restorationsManaging lost or failed temporariesLesson 9Management of complex anatomy: locating and negotiating extra canals, isthmus cleaning techniquesThis section addresses recognition and management of complex root canal anatomy. It covers locating extra canals, isthmus cleaning strategies, use of CBCT and magnification, and shaping modifications to maintain patency and avoid iatrogenic damage.
Identifying teeth prone to extra canalsUse of CBCT for anatomic assessmentTroughing with ultrasonics for MB2Isthmus cleaning and activation methodsGlide path in severely curved canalsBypassing ledges and blockages safelyLesson 10Post-endodontic restorative planning: core build-up, cuspal coverage, timing of permanent restorationThis section focuses on planning definitive restoration after root canal therapy. It covers core build-up materials, posts when indicated, cuspal coverage decisions, timing of crowns, and how restorative design affects long-term tooth survival.
Assessing remaining tooth structureCore build-up materials and techniquesIndications for post placementCuspal coverage versus direct restorationsTiming of permanent restorationsCommunication with restorative dentistLesson 11Shaping protocols: glide path creation, hand vs rotary vs reciprocating systems, sequencing and torque/speed settingsThis section explains glide path creation and compares hand, rotary, and reciprocating systems. It covers sequencing, torque and speed settings, and strategies to reduce procedural errors while preserving dentin and canal anatomy in Botswana.
Manual glide path creation stepsRotary glide path file selectionReciprocating systems indicationsRecommended torque and speed rangesSequencing for curved canalsAvoiding ledges, zips, and transportationLesson 12Anaesthesia options for mandibular molars: inferior alveolar nerve block, infiltration, intraosseous, supplemental techniquesThis section reviews anaesthesia strategies for mandibular molars, including inferior alveolar nerve block, buccal and lingual infiltrations, intraosseous and intraligamentary injections, and supplemental techniques for hot teeth and failures in local care.
Inferior alveolar nerve block protocolBuccal and lingual infiltration techniquesIntraosseous injection indicationsIntraligamentary and intrapulpal useManaging hot teeth and failed blocksAnaesthetic selection and bufferingLesson 13Access cavity preparation: outlines, instruments, prevention of gouging and perforationThis section details access cavity design for different tooth groups, including outline forms and depth control. It reviews burs and ultrasonic tips, strategies to locate canals safely, and methods to prevent gouging, perforation, and missed canals.
Occlusal and lingual outline principlesBur selection and depth orientationUltrasonic refinement of access wallsLocating canal orifices safelyPreventing gouging and perforationManaging calcified or tilted teeth
