{"id":1221,"date":"2023-07-13T13:54:01","date_gmt":"2023-07-13T13:54:01","guid":{"rendered":"https:\/\/medinaz.com\/blog\/?p=1221"},"modified":"2023-07-18T05:52:01","modified_gmt":"2023-07-18T05:52:01","slug":"pulp-testing-endodontics-hy-notes","status":"publish","type":"post","link":"https:\/\/medinaz.com\/blog\/2023\/07\/13\/pulp-testing-endodontics-hy-notes\/","title":{"rendered":"Pulp Testing: Endodontics HY Notes"},"content":{"rendered":"\n<ul><li>Pulp testing determines the responsiveness of <strong><em>pulpal sensory neurons<\/em><\/strong>.<\/li><li>Tests involve thermal or electrical stimulation of a tooth to obtain a patient&#8217;s <strong><em>subjective response.<\/em><\/strong><\/li><li>Objective tests can also be used to assess the integrity of the <strong><em>pulpal vasculature<\/em><\/strong>.<\/li><li>Histological examination is necessary for a quantitative evaluation of pulp tissue status.<\/li><li>Objective clinical signs and symptoms do not always correlate well with pulpal histology.<\/li><\/ul>\n\n\n\n<h2 class=\"has-text-align-center has-light-green-cyan-background-color has-background\" id=\"0-thermal-pulp-testing\" style=\"line-height:1\">Thermal pulp testing<\/h2>\n\n\n\n<h3 id=\"1-cold-testing\">Cold Testing:<\/h3>\n\n\n\n<ul><li><strong><span class=\"has-inline-color has-vivid-red-color\">Normal response:<\/span><\/strong> Sensation felt but disappears upon removal of the cold stimulus.<\/li><li><strong><span class=\"has-inline-color has-vivid-red-color\">Abnormal responses:<\/span><\/strong> Lack of response, lingering or intensified pain after stimulus removal, or immediate, excruciating pain upon stimulus placement.<\/li><li><strong>Frozen carbon dioxide (dry ice)<\/strong> or <strong><span class=\"has-inline-color has-black-color\">refrigerant spray<\/span><\/strong> are reliable methods for cold testing.<\/li><li>Frozen carbon dioxide is effective for evaluating pulpal response in teeth with <strong><em>full coverage crowns<\/em><\/strong> when other tests like electric pulp testing are not possible.<\/li><li><strong>CO2 stick<\/strong> is prepared by delivering CO2 gas into a plastic cylinder and applied to tooth surface.<\/li><li><strong>Refrigerant spray<\/strong> is applied to a large cotton pellet placed on the tooth.<\/li><\/ul>\n\n\n\n<h3 id=\"2-heat-testing-\"><strong>Heat Testing:<\/strong><\/h3>\n\n\n\n<ul><li>Useful when patient complains of <strong><em>intense dental pain upon contact with hot substances<\/em><\/strong>.<\/li><li>When a patient is <strong><em>unable to identify which tooth is sensitive<\/em><\/strong>, a heat test is appropriate<\/li><li>Isolate each tooth with a rubber dam and use an irrigating syringe to apply liquid of similar temperature.<\/li><li><strong><em>Immediate, intense painful response<\/em><\/strong> indicates the offending tooth.<\/li><li>Delayed response may occur, so waiting <strong><em>10 seconds <\/em><\/strong>between tests is recommended.<\/li><li><strong>Heated gutta-percha<\/strong> or <strong>compound stick<\/strong> can be used, with lubricant applied to prevent adherence.<\/li><li><strong>Electronic heat-testing<\/strong> instruments are also available.<\/li><\/ul>\n\n\n\n<h3 id=\"3-complementary-tests\">Complementary Tests:<\/h3>\n\n\n\n<ul><li>Cold and heat testing should be used in conjunction with electric pulp testing for verification.<\/li><li>Lack of response to both cold and electric pulp testing in a <strong><em>mature<\/em><\/strong>, <strong><em>nontraumatized<\/em><\/strong> tooth indicates <strong><em>pulp necrosis<\/em><\/strong>.<\/li><\/ul>\n\n\n<div class=\"ub-styled-box ub-notification-box\" id=\"ub-styled-box-ddab8275-1659-4d03-915d-737f89393b4f\">\n\n\n<p><strong>Multirooted teeth<\/strong> may respond to testing even if some roots have necrotic pulp tissue.<\/p>\n\n\n<\/div>\n\n\n<h3 id=\"4-clinical-application\">Clinical Application:<\/h3>\n\n\n\n<ul><li><strong>Heat testing<\/strong> helps identify sensitive teeth when the specific tooth is unknown.<\/li><li><strong>Cold application<\/strong> can alleviate pain and aid in diagnosis for teeth sensitive to heat.<\/li><li><strong>Tooth responding to heat and relieved by cold<\/strong> is typically <strong><em>necrotic<\/em><\/strong>.<\/li><\/ul>\n\n\n\n<h2 class=\"has-text-align-center has-light-green-cyan-background-color has-background\" id=\"5-electric-pulp-testing\" style=\"line-height:1\">Electric Pulp Testing<\/h2>\n\n\n\n<ul><li>Electric pulp testing assesses <strong><em>pulp vitality<\/em><\/strong> by measuring the response to electric stimulation.<\/li><li>Vitality is determined by the health of the <strong><em>vascular supply<\/em><\/strong>, not the status of nerve fibers.<\/li><li>Electric pulp testers should be part of dental practice, but blood supply-based vitality determination is not yet perfected for routine use.<\/li><li><strong>Limitations of electric pulp testing:<\/strong> Response does not reflect histologic health, only indicates presence of viable nerve fibers.<\/li><li>Numeric readings are significant if significantly different from control tooth readings.<\/li><li><strong>Lack of response<\/strong> to any electric current often indicates <strong><em>necrotic pulp<\/em><\/strong>.<\/li><li>False-positive and false-negative responses can occur, influencing the diagnosis.<\/li><li>Proper use requires <strong>tooth isolation, drying, and coating the probe tip with a medium like toothpaste.<\/strong><\/li><li>Testing involves placing the coated probe on the <strong><em>incisal third<\/em><\/strong> of the tooth&#8217;s <strong><em>facial or buccal area<\/em><\/strong> and completing the circuit with patient touch or lip clip.<\/li><li>Electric pulp testing can be limited by the inability to complete the circuit when wearing rubber gloves for infection control.<\/li><li>Some electric pulp testers require patients to place their finger(s) on the probe to complete the circuit, while lip clips can serve as an alternative.<\/li><li><strong><em>Isolating<\/em><\/strong> and <strong><em>drying<\/em><\/strong> the evaluated teeth is crucial for accurate electric pulp testing.<\/li><li>A control tooth of similar type and location should be tested first to establish a baseline response.<\/li><li>The suspected tooth should be tested at least <strong><em>twice<\/em><\/strong> to confirm results.<\/li><li><strong>Bridging technique<\/strong> can be used for teeth with complete coverage crowns or extensive restorations.<\/li><li>Sensitivity and specificity vary among thermal and electric pulp testing methods.<\/li><li><strong>Cold tests<\/strong> are <strong><em>more reliable in younger patients<\/em><\/strong> with <strong><em>less developed root apices<\/em><\/strong>.<\/li><li>Results should be verified and compared with other testing methods.<\/li><li>Thermal and electric pulp testing will continue until vascular supply assessment methods improve.<\/li><\/ul>\n\n\n<div class=\"ub-styled-box ub-number-box\" id=\"ub-styled-box-5fcc27ba-be24-455f-8945-2674b23b22df\">\n<div class=\"ub-number-panel\">\n        <div class=\"ub-number-container\">\n            <p class=\"ub-number-display\">1<\/p>\n        <\/div>\n        <p class=\"ub-number-box-title\">False-Positive Responses<\/p>\n        <div class=\"ub-number-box-body\">\n\n<p>1. Partial pulp necrosis<\/p>\n\n\n\n<p>2. Patient\u2019s high anxiety<\/p>\n\n\n\n<p>3. Ineffective tooth isolation<\/p>\n\n\n\n<p>4. Contact with metal restorations<\/p>\n\n<\/div>\n    <\/div>\n\n<div class=\"ub-number-panel\">\n        <div class=\"ub-number-container\">\n            <p class=\"ub-number-display\">2<\/p>\n        <\/div>\n        <p class=\"ub-number-box-title\">False-Negative Responses<\/p>\n        <div class=\"ub-number-box-body\">\n\n<p>1. Calcific obliterations in the root canals<\/p>\n\n\n\n<p>2. Recently traumatized teeth<\/p>\n\n\n\n<p>3. Immature apex<\/p>\n\n\n\n<p>4. Drugs that increase patient\u2019s threshold for pain<\/p>\n\n\n\n<p>5. Poor contact of pulp tester to tooth<\/p>\n\n<\/div>\n    <\/div>\n<\/div>\n\n\n<h2 class=\"has-text-align-center has-black-color has-light-green-cyan-background-color has-text-color has-background\" id=\"6-laser-doppler-flowmetry\" style=\"line-height:1\">Laser Doppler Flowmetry<\/h2>\n\n\n\n<ul><li>Laser Doppler flowmetry (LDF) assesses <strong><em>blood flow in microvascular systems<\/em><\/strong>.<\/li><li>Adaptation of LDF technology is being explored to <strong><em>assess pulpal blood flow<\/em><\/strong>.<\/li><li>A <strong><em>diode<\/em><\/strong> projects an infrared light beam through the tooth crown and pulp chamber.<\/li><li>The scattered infrared light beam&#8217;s frequency shift indicates the velocity of moving red blood cells using the <strong><em>Doppler principle<\/em><\/strong>.<\/li><li>LDF has been found to be <strong>accurate<\/strong>, <strong>reliable<\/strong>, and <strong>reproducible<\/strong> in assessing <strong><em>pulpal blood flow.<\/em><\/strong><\/li><li>Objective data are collected, eliminating reliance on subjective patient responses.<\/li><li>LDF is particularly useful in cases of <strong><em>luxation injuries<\/em><\/strong> where electric and thermal pulp testing may be inaccurate.<\/li><li>Despite its effectiveness, routine use of LDF in dental practice is not common.<\/li><\/ul>\n\n\n\n<h2 class=\"has-text-align-center has-light-green-cyan-background-color has-background\" id=\"7-pulse-oximetry\" style=\"line-height:0\">Pulse Oximetry<\/h2>\n\n\n\n<ul><li>Pulse oximeter is a noninvasive device used to measure<strong><em> oxygen concentration<\/em><\/strong> in the blood and pulse rate.<\/li><li>It transmits <strong><em>red and infrared light<\/em><\/strong> through a translucent body part (e.g., finger, earlobe, tooth) and detects the absorbed light on the opposite side.<\/li><li>Microprocessor calculates <strong><em>pulse rate<\/em><\/strong> and <strong><em>oxygen concentration<\/em><\/strong> based on the difference between emitted and received light. (<a href=\"https:\/\/www.ncbi.nlm.nih.gov\/pmc\/articles\/PMC4504215\/\" target=\"_blank\" rel=\"noreferrer noopener\">ref<\/a>)<\/li><li>Obstruction from restorations can limit the effectiveness of pulse oximetry for pulp vitality testing.<\/li><li><strong>Custom-made sensors<\/strong> have been developed and found to be more accurate than electric and thermal pulp tests.<\/li><li>Useful for evaluating teeth with <strong><em>traumatic injuries<\/em><\/strong>, especially in the short term.<\/li><li>Studies on pulse oximetry for pulp vitality diagnosis yield mixed conclusions.<\/li><li>Some studies support its reliability, while others suggest current technology limitations.<\/li><li>Cumbersome and complicated devices for pulp testing hinder routine use in dental practice.<\/li><\/ul>\n\n\n\n<h2 class=\"has-text-align-center has-light-green-cyan-background-color has-background\" style=\"line-height:1\"><strong>Bite Test<\/strong><\/h2>\n\n\n\n<ul><li>Percussion and bite tests are performed when a patient experiences <strong>pain while biting<\/strong>.<\/li><li>These tests <strong>help to determine the specific tooth causing the pain<\/strong> when the patient is unsure.<\/li><li>Sensitivity during biting can be due to <strong>pulpal pathosis<\/strong> extending into the periodontal ligament space (symptomatic apical periodontitis) or a <strong>crack in the tooth<\/strong>.<\/li><li><strong>Periradicular periodontitis<\/strong> will elicit pain during percussion and bite tests, regardless of the applied pressure on the coronal part of the tooth.<\/li><li>A <strong>cracked tooth<\/strong> or fractured cusp will typically cause pain when pressure is applied in a certain direction to a specific cusp or section of the tooth.<\/li><li>Devices such as <strong>cotton tip applicators, toothpicks, orangewood sticks, rubber polishing wheels, Tooth Slooth<\/strong>, and <strong>FracFinder <\/strong>can be used for the bite test.<\/li><li><strong>Adjacent<\/strong> and <strong>contralateral teeth<\/strong> should serve as controls to determine the normal response to the tests.<\/li><li>During the bite test, a device is placed on the cusp to be tested, and the patient applies biting pressure to the opposite side of the device&#8217;s flat surface.<\/li><li>Biting pressure should be applied slowly until full closure, maintained for a few seconds, and then released quickly.<\/li><li>Each cusp can be tested individually.<\/li><li>The clinician should observe whether pain is elicited during the pressure phase or upon quick release of the pressure.<\/li><li><strong>Pain upon release of biting pressure<\/strong> is commonly associated with a <strong>fractured cusp<\/strong> or <strong>cracked tooth<\/strong>.<\/li><\/ul>\n\n\n\n<h2 class=\"has-text-align-center has-light-green-cyan-background-color has-background\" style=\"line-height:1\"><strong>Test Cavity<\/strong><\/h2>\n\n\n\n<ul><li>The test cavity method is an <strong>invasive<\/strong> and <strong>irreversible<\/strong> test used as a last resort <strong>when other tests are not possible<\/strong> or <strong>inconclusive<\/strong>.<\/li><li>It is typically employed <strong>when a tooth with a full coverage crown is suspected of having pulpal disease.<\/strong><\/li><li>If electric pulp tester and cold test results are inconclusive and bridging techniques are not applicable, a small class I cavity is prepared through the occlusal surface of the crown.<\/li><li>The procedure is performed <strong>without anesthesia<\/strong>, and the patient is asked to report any painful sensations during drilling.<\/li><li>If pain is felt upon reaching sound dentin, the procedure is stopped, and the class I cavity is restored. This indicates the presence of viable nerve tissue in the pulp but does not confirm complete pulp health.<\/li><li>If the patient does not feel any sensation when the bur reaches the dentin, it suggests pulp necrosis, indicating the need for root canal therapy.<\/li><\/ul>\n\n\n\n<h2 class=\"has-text-align-center has-light-green-cyan-background-color has-background\" style=\"line-height:1\"><strong>Staining and Transillumination<\/strong><\/h2>\n\n\n\n<p><strong>Staining:<\/strong><\/p>\n\n\n\n<ul><li>Staining is useful for detecting <strong>surface cracks<\/strong> in teeth.<\/li><li><strong>Methylene blue<\/strong> dye is commonly used, applied with a cotton tip applicator.<\/li><li><strong>The dye penetrates into cracked areas<\/strong>, indicating the possible location of the crack.<\/li><li>Excess dye can be removed with <strong>70% isopropyl alcohol<\/strong>.<\/li><\/ul>\n\n\n\n<p><strong>Transillumination:<\/strong><\/p>\n\n\n\n<ul><li>Transillumination involves using a <strong>bright fiberoptic light probe<\/strong> on the tooth&#8217;s surface.<\/li><li>Directing the light at the <strong>cementum-enamel junction (CEJ) <\/strong>can reveal the extent of the fracture.<\/li><li>Fractured teeth block transilluminated light, causing the <strong>affected area to appear gray<\/strong> compared to the glowing area proximal to the light source.<\/li><li>While dyes and transillumination can detect the presence of a fracture, they may not provide information about the depth of the fracture.<\/li><\/ul>\n\n\n\n<h2 class=\"has-text-align-center has-light-green-cyan-background-color has-background\" style=\"line-height:1\"><strong>Selective Anesthesia<\/strong><\/h2>\n\n\n\n<ul><li>Selective anesthesia is useful when <strong>symptoms are not localized<\/strong> or <strong>referred<\/strong>, making diagnosis challenging.<\/li><li>If the patient cannot specify the arch causing the pain, the <strong>maxillary arch is selectively anesthetized first.<\/strong><\/li><li><strong>Periodontal ligament (intraligamentary) injection<\/strong> is administered starting from the <strong>distal <\/strong>sulcus of the <strong>most posterior tooth<\/strong> in the suspected quadrant.<\/li><li>Anesthesia is then administered anteriorly, one tooth at a time, until the pain is eliminated.<\/li><li>If the pain persists, the same technique is repeated on the mandibular teeth.<\/li><li><strong>Periodontal ligament injections<\/strong> may also anesthetize adjacent teeth, making them more helpful in identifying the arch rather than a specific tooth.<\/li><\/ul>\n\n\n<div class=\"ub_call_to_action\" id=\"ub_call_to_action_6405b74b-d03f-468b-84a2-7a63524023db\">\n                <div class=\"ub_call_to_action_headline\">\n                    <p class=\"ub_call_to_action_headline_text\"><strong>Check Medinaz Visual Dental Books<\/strong><\/p><\/div>\n                <div class=\"ub_call_to_action_content\">\n                    <p class=\"ub_cta_content_text\"><strong>Why choose Medinaz Visual Dental Books for your NBDE, NEET MDS, and Board exam preparation?<\/strong><br>1. <strong>Comprehensive Visual Content:<\/strong> Simplify complex dental concepts with visually engaging content that facilitates better understanding.<br>2. <strong>Exam-Focused Approach:<\/strong> Strategically organized to cover key topics and high-yield areas, Medinaz helps you focus your studies efficiently and effectively.<br>3. <strong>Interactive Learning:<\/strong> Visuals, illustrations, mnemonics, and diagrams enhance retention and make grasping dental concepts easier.<br>4. <strong>Easy-to-Follow Format:<\/strong> User-friendly chapters present information in a step-by-step manner, allowing you to review at your own pace.<br>5. <strong>Practice Questions and Explanations:<\/strong> Assess your progress, identify areas for improvement, and sharpen problem-solving skills with practice questions and detailed explanations.<\/p><\/div>\n                <div class=\"ub_call_to_action_button\">\n                    <a href=\"https:\/\/medinaz.com\/\" target=\"_blank\" rel=\"noopener noreferrer\"\n                        class=\"ub_cta_button\">\n                        <p class=\"ub_cta_button_text\">Check our Website<\/p><\/a><\/div><\/div>\n\n\n<p><strong>Reference:<\/strong><\/p>\n\n\n\n<ol><li>Cohen&#8217;s Pathways of the Pulp; 11th Edition; by Louis H. Berman DDS FACD (Author), Kenneth M. Hargreaves<\/li><li>Grossman\u2019s Endodontic Practice; 14th Edition<\/li><\/ol>\n\n\n<div class=\"ub-styled-box ub-notification-box\" id=\"ub-styled-box-9670423e-4803-4e31-89f3-a18c87020e78\">\n\n\n<p>You may also like these <strong><a href=\"https:\/\/medinaz.com\/blog\/category\/dental-notes\/\" target=\"_blank\" rel=\"noreferrer noopener\">Free Notes<\/a><\/strong><\/p>\n\n\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Pulp testing determines the responsiveness of pulpal sensory neurons. Tests involve thermal or electrical stimulation of a tooth to obtain a patient&#8217;s subjective response. Objective tests can also be used to assess the integrity of the pulpal vasculature. Histological examination is necessary for a quantitative evaluation of pulp tissue status. Objective clinical signs and symptoms<\/p>\n","protected":false},"author":1,"featured_media":1235,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ub_ctt_via":""},"categories":[45,225],"tags":[75,227,226],"featured_image_src":"https:\/\/medinaz.com\/blog\/wp-content\/uploads\/2023\/07\/Pulp-Testing.jpg","author_info":{"display_name":"Medinaz Academy","author_link":"https:\/\/medinaz.com\/blog\/author\/medinaz-blog-admin\/"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v19.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Pulp Testing: Endodontics HY Notes<\/title>\n<meta name=\"description\" content=\"This Endodontic High-yield Note is about Pulp Testing. 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