Ignite Creation Date:
2025-12-25 @ 12:07 AM
Ignite Modification Date:
2026-02-25 @ 4:11 AM
Study NCT ID:
NCT02477358
Status:
COMPLETED
Last Update Posted:
2023-10-04
First Post:
2015-05-26
Is NOT Gene Therapy:
True
Has Adverse Events:
True
Brief Title:
The Use of Platelet Rich Fibrin in Pulpal and Periodontal Regeneration in Mature Teeth
Sponsor:
Organization:
Raw JSON
{'hasResults': True, 'derivedSection': {'miscInfoModule': {'versionHolder': '2025-12-24'}, 'conditionBrowseModule': {'meshes': [{'id': 'D003790', 'term': 'Dental Pulp Necrosis'}], 'ancestors': [{'id': 'D003788', 'term': 'Dental Pulp Diseases'}, {'id': 'D014076', 'term': 'Tooth Diseases'}, {'id': 'D009057', 'term': 'Stomatognathic Diseases'}, {'id': 'D009336', 'term': 'Necrosis'}, {'id': 'D010335', 'term': 'Pathologic Processes'}, {'id': 'D013568', 'term': 'Pathological Conditions, Signs and Symptoms'}]}}, 'resultsSection': {'moreInfoModule': {'pointOfContact': {'email': 'eleasley@gmail.com', 'phone': '530-524-6020', 'title': 'Elisabeth Easley', 'organization': 'University of Nebraska Medical Center'}, 'certainAgreement': {'piSponsorEmployee': False, 'restrictiveAgreement': False}, 'limitationsAndCaveats': {'description': 'Limitations of study include bias in patient reporting of sensation for vitality testing, lack of control of possible contributing factors including bruxism, and finally differing values for time out of mouth for control vs experimental groups.'}}, 'adverseEventsModule': {'timeFrame': 'Initiation of study to termination of study (11 months total)', 'eventGroups': [{'id': 'EG000', 'title': 'Experimental: PRF Treated', 'description': 'Teeth Extracted and reimplanted after PRF endodontic revascularization therapy. Splinted to adjacent teeth. Monitored for 3 months then tested for vitality (EPT, Thermal, Percussion), extracted, histologically examined.', 'otherNumAtRisk': 18, 'deathsNumAtRisk': 18, 'otherNumAffected': 0, 'seriousNumAtRisk': 18, 'deathsNumAffected': 0, 'seriousNumAffected': 0}, {'id': 'EG001', 'title': 'No Intervention: Control', 'description': 'Teeth Extracted and reimplanted. Splinted to adjacent teeth. Monitored for 3 months then tested for vitality (EPT, Thermal, Percussion), extracted, histologically examined.', 'otherNumAtRisk': 18, 'deathsNumAtRisk': 18, 'otherNumAffected': 0, 'seriousNumAtRisk': 18, 'deathsNumAffected': 0, 'seriousNumAffected': 0}], 'frequencyThreshold': '0'}, 'outcomeMeasuresModule': {'outcomeMeasures': [{'type': 'PRIMARY', 'title': 'Vitality of Teeth (Units) Using Thermal and Percussion Sensitivity Trend Observed During Study Duration (3-11 Months)', 'denoms': [{'units': 'Participants', 'counts': [{'value': '18', 'groupId': 'OG000'}, {'value': '18', 'groupId': 'OG001'}]}, {'units': 'Teeth', 'counts': [{'value': '35', 'groupId': 'OG000'}, {'value': '35', 'groupId': 'OG001'}]}], 'groups': [{'id': 'OG000', 'title': 'Experimental: PRF Treated', 'description': 'Teeth Extracted and reimplanted after PRF endodontic revascularization therapy. Splinted to adjacent teeth. Monitored for 3 months then tested for vitality (EPT, Thermal, Percussion), extracted, histologically examined.'}, {'id': 'OG001', 'title': 'No Intervention: Control', 'description': 'Teeth Extracted and reimplanted. Splinted to adjacent teeth. Monitored for 3 months then tested for vitality (EPT, Thermal, Percussion), extracted, histologically examined.'}], 'classes': [{'title': 'Teeth with Thermal Sensitivity Results', 'categories': [{'measurements': [{'value': '.559', 'spread': '.120', 'groupId': 'OG000'}, {'value': '.592', 'spread': '.118', 'groupId': 'OG001'}]}]}, {'title': 'Teeth with Percussion Sensitivity Results', 'categories': [{'measurements': [{'value': '.065', 'spread': '.046', 'groupId': 'OG000'}, {'value': '.040', 'spread': '.034', 'groupId': 'OG001'}]}]}], 'paramType': 'MEAN', 'timeFrame': '3-11 months. Each participant was measured for as long as it took to complete their prosthesis. The minimum study duration was 3 months and the maximum duration was 11 months in one subject.', 'description': 'Teeth (units) measuring vital via the following tests: thermal, percussion. Thermal was utilized with endo cold spray and percussion from tapping on teeth with mouth mirror.', 'unitOfMeasure': 'Teeth', 'dispersionType': 'Standard Deviation', 'reportingStatus': 'POSTED', 'typeUnitsAnalyzed': 'Teeth', 'denomUnitsSelected': 'Teeth', 'populationDescription': 'Half of the subjects teeth will have PRF endodontic revascularization therapy and the other teeth will be reimplanted only without PRF endodontic reveascularization therapy.'}, {'type': 'PRIMARY', 'title': 'Vitality of Teeth Using Electronic Pulp Test (EPT Units) Trend Observed During Study Duration (3-11 Months)', 'denoms': [{'units': 'Participants', 'counts': [{'value': '18', 'groupId': 'OG000'}, {'value': '18', 'groupId': 'OG001'}]}, {'units': 'Teeth', 'counts': [{'value': '35', 'groupId': 'OG000'}, {'value': '35', 'groupId': 'OG001'}]}], 'groups': [{'id': 'OG000', 'title': 'PRF Treated', 'description': 'Subjects will be randomized to either receive either left tooth platelet rich fibrin; right tooth implant alone, OR right tooth platelet rich fibrin; left tooth implant alone. Following treatment each tooth is replaced and splinted to the adjacent teeth. Teeth are followed for 3 months and then tested for vitality before extracting and examining histologically.\n\nLeft Tooth Platelet Rich Fibrin; Right Tooth Implant Alone: All study participants will have two teeth extracted and 2 mm of root removed. Half of the subjects will have platelet rich fibrin endodontic revascularization therapy will be applied to the left tooth socket only. The right tooth is implanted alone. Each tooth is replaced and splinted to the adjacent teeth. Teeth are followed for 3 months and then tested for vitality before extracting and examining histologically.\n\nRight Tooth Platelet Rich Fibrin; Left Tooth Implant Alone: All study participants will have two teeth extracted and 2 mm of root removed. Half of the subjects will have platelet rich fibrin endodontic revascularization therapy to the right tooth socket only. The left tooth is implanted alone. Each tooth is replaced and splinted to the adjacent teeth. Teeth are followed for 3 months and then tested for vitality before extracting and examining histologically.'}, {'id': 'OG001', 'title': 'Control', 'description': 'Subjects will be randomized to either receive either left tooth platelet rich fibrin; right tooth implant alone, OR right tooth platelet rich fibrin; left tooth implant alone. Following treatment each tooth is replaced and splinted to the adjacent teeth. Teeth are followed for 3 months and then tested for vitality before extracting and examining histologically.'}], 'classes': [{'categories': [{'measurements': [{'value': '57', 'spread': '3.79', 'groupId': 'OG000'}, {'value': '55.45', 'spread': '3.81', 'groupId': 'OG001'}]}]}], 'paramType': 'MEAN', 'timeFrame': '3-11 months. Each participant was measured for as long as it took to complete their prosthesis. The minimum study duration was 3 months and the maximum duration was 11 months in one subject.', 'description': 'Teeth (units) measuring vital via the following tests: EPT utilizing EPT units (0-80). There is no specific number that suggests vital vs un-vital but rather it is a trend towards un-vital which is determined as 80.', 'unitOfMeasure': 'EPT Units (0-80)', 'dispersionType': 'Standard Deviation', 'reportingStatus': 'POSTED', 'typeUnitsAnalyzed': 'Teeth', 'denomUnitsSelected': 'Teeth', 'populationDescription': 'Half of the subjects teeth will have PRF endodontic revascularization therapy and the other teeth will be reimplanted only without PRF endodontic reveascularization therapy.'}]}, 'participantFlowModule': {'groups': [{'id': 'FG000', 'title': 'PRF Treatment', 'description': 'All study participants are scheduled for teeth extraction. Subjects will be randomized to either receive either left tooth PRF; right tooth reimplantation, OR right tooth PRF; left tooth reimplantation. Following treatment each tooth is replaced and splinted to the adjacent teeth. Teeth are followed for 3 months and then tested for vitality before extracting and examining histologically.\n\nAll study participants will have two teeth extracted and 2 mm of root removed. Half of the subjects teeth will have PRF endodontic revascularization therapy and the other teeth will be reimplanted alone. Each tooth is replaced and splinted to the adjacent teeth. Teeth are followed for 3 months and then tested for vitality before extracting and examining histologically.'}, {'id': 'FG001', 'title': 'No Treatment', 'description': 'All study participants are scheduled for teeth extraction. Subjects will be randomized to either receive either left tooth PRF; right tooth reimplantation, OR right tooth PRF; left tooth reimplantation. Following treatment each tooth is replaced and splinted to the adjacent teeth. Teeth are followed for 3 months and then tested for vitality before extracting and examining histologically.\n\nAll study participants will have two teeth extracted and 2 mm of root removed. Half of the subjects teeth will have PRF endodontic revascularization therapy and the other teeth will be reimplanted alone. Each tooth is replaced and splinted to the adjacent teeth. Teeth are followed for 3 months and then tested for vitality before extracting and examining histologically.'}], 'periods': [{'title': 'Overall Study', 'milestones': [{'type': 'STARTED', 'achievements': [{'groupId': 'FG000', 'numUnits': '36', 'numSubjects': '18'}, {'groupId': 'FG001', 'numUnits': '36', 'numSubjects': '18'}]}, {'type': 'COMPLETED', 'comment': '2 teeth (1 Treatment and 1 control) were withdrawn from the study due to early removal and excluded from statistical data.', 'achievements': [{'groupId': 'FG000', 'numUnits': '35', 'numSubjects': '18'}, {'groupId': 'FG001', 'numUnits': '35', 'numSubjects': '18'}]}, {'type': 'NOT COMPLETED', 'achievements': [{'groupId': 'FG000', 'numUnits': '1', 'numSubjects': '0'}, {'groupId': 'FG001', 'numUnits': '1', 'numSubjects': '0'}]}]}], 'typeUnitsAnalyzed': 'Teeth', 'recruitmentDetails': "Patient's were recruited from the UNMC Dental School", 'preAssignmentDetails': 'No pre-assignment details were completed prior to assignment to an arm/group'}, 'baselineCharacteristicsModule': {'denoms': [{'units': 'Participants', 'counts': [{'value': '18', 'groupId': 'BG000'}, {'value': '18', 'groupId': 'BG001'}, {'value': '18', 'groupId': 'BG002'}]}, {'units': 'Teeth', 'counts': [{'value': '35', 'groupId': 'BG000'}, {'value': '35', 'groupId': 'BG001'}, {'value': '70', 'groupId': 'BG002'}]}], 'groups': [{'id': 'BG000', 'title': 'PRF Treatment', 'description': 'All study participants are scheduled for teeth extraction (between 2 to 6 teeth per participant). Subjects will be randomized to either receive either left tooth PRF; right tooth re-implantation, OR right tooth PRF; left tooth re implantation. Following treatment each tooth is replaced and splinted to the adjacent teeth. Teeth are followed for at least 3 months (up to 11 months) and then tested for vitality before extracting and examining histologically.\n\nAll study participants will have two teeth extracted and 2 mm of root removed. Half of the subjects teeth will have PRF endodontic revascularization therapy. Each tooth is replaced and splinted to the adjacent teeth. Teeth are followed for 3 months and then tested for vitality before extracting and examining histologically.'}, {'id': 'BG001', 'title': 'No Treatment', 'description': 'All study participants are scheduled for teeth extraction (between 2 to 6 teeth per participant). Subjects will be randomized to either receive either left tooth PRF; right tooth re-implantation, OR right tooth PRF; left tooth re-implantation. Following treatment each tooth is replaced and splinted to the adjacent teeth. Teeth are followed for 3 months (up to 11 months) and then tested for vitality before extracting and examining histologically.\n\nAll study participants will have two teeth extracted and 2 mm of root removed. Half of the subjects teeth will be re implanted alone. Each tooth is replaced and splinted to the adjacent teeth. Teeth are followed for 3 months and then tested for vitality before extracting and examining histologically.'}, {'id': 'BG002', 'title': 'Total', 'description': 'Total of all reporting groups'}], 'measures': [{'title': 'Age, Continuous', 'classes': [{'categories': [{'measurements': [{'value': '58.5', 'groupId': 'BG000', 'lowerLimit': '41', 'upperLimit': '76'}, {'value': '58.5', 'groupId': 'BG001', 'lowerLimit': '41', 'upperLimit': '76'}, {'value': '58.5', 'groupId': 'BG002', 'lowerLimit': '41', 'upperLimit': '76'}]}]}], 'paramType': 'MEDIAN', 'description': 'Unit of measure- years', 'unitOfMeasure': 'years', 'dispersionType': 'FULL_RANGE', 'denomUnitsSelected': 'Teeth'}, {'title': 'Sex: Female, Male', 'classes': [{'categories': [{'title': 'Female', 'measurements': [{'value': '17', 'groupId': 'BG000'}, {'value': '17', 'groupId': 'BG001'}, {'value': '34', 'groupId': 'BG002'}]}, {'title': 'Male', 'measurements': [{'value': '18', 'groupId': 'BG000'}, {'value': '18', 'groupId': 'BG001'}, {'value': '36', 'groupId': 'BG002'}]}]}], 'paramType': 'COUNT_OF_UNITS', 'unitOfMeasure': 'Teeth', 'denomUnitsSelected': 'Teeth', 'populationDescription': 'Units were not evenly split between male/female gender. A larger proportion of total units were measured in male participants.'}, {'title': 'Pre-treatment Tooth Vitality to Thermal and Percussion Sensitivity', 'classes': [{'title': 'Pre Thermal', 'categories': [{'measurements': [{'value': '.852', 'spread': '.089', 'groupId': 'BG000'}, {'value': '.939', 'spread': '.048', 'groupId': 'BG001'}, {'value': '.8955', 'spread': '.0685', 'groupId': 'BG002'}]}]}, {'title': 'Pre Percussion', 'categories': [{'measurements': [{'value': '.121', 'spread': '.066', 'groupId': 'BG000'}, {'value': '.092', 'spread': '.056', 'groupId': 'BG001'}, {'value': '.1065', 'spread': '.061', 'groupId': 'BG002'}]}]}], 'paramType': 'MEAN', 'description': 'Evaluation recorded to determine the initial vitality of each tooth using Thermal and Percussion Sensitivity', 'unitOfMeasure': 'Teeth', 'dispersionType': 'STANDARD_DEVIATION', 'denomUnitsSelected': 'Teeth'}, {'title': 'Pre-treatment Tooth Vitality to Electric Pulp Test (EPT)', 'classes': [{'categories': [{'measurements': [{'value': '34.0', 'spread': '3.0', 'groupId': 'BG000'}, {'value': '33.1', 'spread': '3.0', 'groupId': 'BG001'}, {'value': '33.5', 'spread': '3.0', 'groupId': 'BG002'}]}]}], 'paramType': 'MEAN', 'description': 'Evaluation recorded to determine the initial vitality of each tooth using a Electronic Pulp Test (EPT) 0-80 units. There is no specific number that suggests vital vs un-vital but rather it is a trend towards unvital which is determined as 80.', 'unitOfMeasure': 'EPT Units (0-80)', 'dispersionType': 'STANDARD_DEVIATION', 'denomUnitsSelected': 'Teeth'}], 'typeUnitsAnalyzed': 'Teeth', 'populationDescription': 'Half of the subjects teeth will have PRF endodontic revascularization therapy and the other teeth will be reimplanted alone.'}}, 'protocolSection': {'designModule': {'phases': ['NA'], 'studyType': 'INTERVENTIONAL', 'designInfo': {'allocation': 'RANDOMIZED', 'maskingInfo': {'masking': 'DOUBLE', 'whoMasked': ['PARTICIPANT', 'CARE_PROVIDER'], 'maskingDescription': 'Participant and Operating Surgeon were masked to tooth designation. Principal investigator/outcomes assessor aware of designation.'}, 'primaryPurpose': 'TREATMENT', 'interventionModel': 'FACTORIAL', 'interventionModelDescription': 'Multiple teeth (2-6 teeth per participant) will be removed with the root attached and then half of the total teeth(per participant) will be placed back in the socket with Platelet Rich Fibrin (PRF) and the other half will be placed in the socket without PRF.'}, 'enrollmentInfo': {'type': 'ACTUAL', 'count': 18}}, 'statusModule': {'overallStatus': 'COMPLETED', 'startDateStruct': {'date': '2014-09-29', 'type': 'ACTUAL'}, 'expandedAccessInfo': {'hasExpandedAccess': False}, 'statusVerifiedDate': '2023-09', 'completionDateStruct': {'date': '2016-06-01', 'type': 'ACTUAL'}, 'lastUpdateSubmitDate': '2023-09-27', 'studyFirstSubmitDate': '2015-05-26', 'resultsFirstSubmitDate': '2016-06-14', 'studyFirstSubmitQcDate': '2015-06-19', 'lastUpdatePostDateStruct': {'date': '2023-10-04', 'type': 'ACTUAL'}, 'resultsFirstSubmitQcDate': '2021-10-19', 'studyFirstPostDateStruct': {'date': '2015-06-22', 'type': 'ESTIMATED'}, 'resultsFirstPostDateStruct': {'date': '2021-10-20', 'type': 'ACTUAL'}, 'primaryCompletionDateStruct': {'date': '2016-06-01', 'type': 'ACTUAL'}}, 'outcomesModule': {'primaryOutcomes': [{'measure': 'Vitality of Teeth (Units) Using Thermal and Percussion Sensitivity Trend Observed During Study Duration (3-11 Months)', 'timeFrame': '3-11 months. Each participant was measured for as long as it took to complete their prosthesis. The minimum study duration was 3 months and the maximum duration was 11 months in one subject.', 'description': 'Teeth (units) measuring vital via the following tests: thermal, percussion. Thermal was utilized with endo cold spray and percussion from tapping on teeth with mouth mirror.'}, {'measure': 'Vitality of Teeth Using Electronic Pulp Test (EPT Units) Trend Observed During Study Duration (3-11 Months)', 'timeFrame': '3-11 months. Each participant was measured for as long as it took to complete their prosthesis. The minimum study duration was 3 months and the maximum duration was 11 months in one subject.', 'description': 'Teeth (units) measuring vital via the following tests: EPT utilizing EPT units (0-80). There is no specific number that suggests vital vs un-vital but rather it is a trend towards un-vital which is determined as 80.'}]}, 'oversightModule': {'oversightHasDmc': False, 'isFdaRegulatedDrug': False, 'isFdaRegulatedDevice': False}, 'conditionsModule': {'conditions': ['Pulpal Necrosis']}, 'descriptionModule': {'briefSummary': 'In cases of permanent tooth avulsion, it is widely accepted that some necrosis always occurs after avulsion injury. If the pulp tissue does not revascularize or if endodontic therapy is not performed, the pulp space can become infected. Platelet rich fibrin (PRF) is a second generation platelet concentrate that allows the clinician to obtain fibrin membranes enriched with platelets and growth factors from an anticoagulant-free blood harvest. Clinical relevance of PRF and revascularization has been demonstrated in several case studies of avulsion. To date no human clinical trials have been performed evaluating the effectiveness of PRF on pulpal revascularization after reimplantation and its benefits in limiting inflammation. The following study consists of two phases: Phase 1: An in vitro model evaluating the effects of PRF in limiting inflammatory response of pdl cell cultures in the presence of an inflammatory mediators. Phase 2: An in vivo model utilizing mature teeth previously treatment planned for extraction, treating with PRF, reimplanting teeth and following for three to four months before extracting and performing histological analysis. If PRF is capable of promoting revascularization in mature teeth the potential benefits extend to limiting the need for endodontic therapy following mature tooth avulsion, potential for mature tooth transplantation in situations of congenitally missing teeth, and utilization of PRF in endodontic revascularization therapy.', 'detailedDescription': "When a tooth is avulsed, it is separated from its socket causing damage to the attachment apparatus. The periodontal ligament (pdl) is a group of specialized connective tissue fibers that attaches the cementum of the root (outer layer) to the alveolar bone. Avulsion can cause damage to the pdl and possible cemental tears. If the periodontal ligament is left attached to the root and minimal time lapse occurs damage to the tissues is usually limited. In these cases, reimplantation is a widely accepted treatment; however the long term success of an avulsed tooth is dependent on various factors. When excessive drying occurs prior to re-implantation, a severe inflammatory response is elicited directly on the root surface which may result in osseous replacement or replacement resorption. Some necrosis always occurs after avulsion injury, and while the necrotic pulp is of little consequence, this necrotic tissue is at high risk for bacterial contamination. If the pulp tissue does not revascularize or if endodontic therapy is not performed, the pulp space can become infected. It has been suggested that treatment strategies should attempt to limit peri-radicular inflammation therefore promoting favorable cemental healing and limiting unfavorable osseous replacement.\n\nPlatelet rich fibrin (PRF) is a second generation platelet concentrate that allows the clinician to obtain fibrin membranes enriched with platelets and growth factors from an anticoagulant-free blood harvest and without the addition of artificial biochemical modification. PRF has demonstrated clinical relevance through its ability to stimulate cell proliferation of osteoblasts, gingival fibroblasts, and periodontal ligament (PDL) cells. In addition, PRF has been shown to limit epithelial cell growth therefore promoting connective tissue and alveolar bone regeneration and inhibiting epithelial proliferation. These properties make it a favorable product for surgical procedures requiring micro vascularization.\n\nIn vitro studies with PRF and canine dental pulp cells demonstrate PRF's ability to promote chemotaxis and proliferation of the pulp cells and contributed to pulp repair. When PRF was combined with human dental pulp cells derived from extracted third molars it did not interfere with vitality and stimulated proliferation and differentiation. Additionally it upregulated the expression of osteoprotegerin and alkaline phosphatase.\n\nAnimal models evaluated PRF granules combined with human pdl stem cells and placed them on the root surface of freshly extracted canine teeth. The teeth were then reimplanted and evaluated histologically after a healing phase. A regeneration of the PDL-like tissue and reduction in ankylosis and inflammation were noted in animals with the PRF granules.\n\nClinical relevance of PRF and revascularization has been demonstrated in several case studies of avulsion. These case studies utilized a general protocol of minimally instrumenting the avulsed tooth. One study performed a 3 mm resection of the root apex followed by minimal instrumentation of the canal. Blood is then drawn from the patient and PRF is prepared via Choukroun's method. The PRF is then placed on the root surface and condensed into the canal. The tooth was then reimplanted, splinted, and the patient followed for up to 24 months. The tooth tested vital to thermal and percussion testing and radiographically did not show signs of replacement resorption or inflammation.\n\nTo date no human studies have been performed evaluating the effectiveness of PRF on pulpal revascularization after reimplantation and its benefits in limiting inflammation. Additionally, only histological evidence of the benefits of PRF has been demonstrated in animal models. If PRF is capable of promoting revascularization in mature teeth the potential benefits extend to limiting the need for endodontic therapy following mature tooth avulsion, potential for mature tooth transplantation in situations of congenitally missing teeth, and utilization of PRF in endodontic revascularization therapy.\n\nThe following research would consist of two phases: Phase 1. An in vitro model evaluating the effects of PRF in limiting inflammatory response of pulp and pdl cell cultures in the presence of an inflammatory mediators. Phase 2. An in vivo model utilizing mature teeth previously treatment planned for extraction, treating in accordance to the procedure documented by one group, reimplanting teeth and following for three to four months before extracting and performing histological analysis."}, 'eligibilityModule': {'sex': 'ALL', 'stdAges': ['ADULT', 'OLDER_ADULT'], 'minimumAge': '19 Years', 'healthyVolunteers': True, 'eligibilityCriteria': 'Inclusion Criteria:\n\n* any adult with single rooted vital teeth previously treatment planned for extraction to meet their prosthetic or orthodontic needs.\n\nExclusion Criteria:\n\n* exclusion criteria will include: individuals with systemic illnesses that could compromise vascularity or healing,\n* patients who are pregnant,\n* or bisphosphonates.'}, 'identificationModule': {'nctId': 'NCT02477358', 'briefTitle': 'The Use of Platelet Rich Fibrin in Pulpal and Periodontal Regeneration in Mature Teeth', 'organization': {'class': 'OTHER', 'fullName': 'University of Nebraska'}, 'officialTitle': 'The Use of Platelet Rich Fibrin in Pulpal and Periodontal Regeneration in Mature Teeth', 'orgStudyIdInfo': {'id': '0443-14-FB'}}, 'armsInterventionsModule': {'armGroups': [{'type': 'EXPERIMENTAL', 'label': 'PRF Treated', 'description': 'Subjects will be randomized to either receive either left tooth platelet rich fibrin; right tooth implant alone, OR right tooth platelet rich fibrin; left tooth implant alone. Following treatment each tooth is replaced and splinted to the adjacent teeth. Teeth are followed for 3 months and then tested for vitality before extracting and examining histologically.', 'interventionNames': ['Procedure: Left Tooth Platelet Rich Fibrin; Right Tooth Implant Alone', 'Procedure: Right Tooth Platelet Rich Fibrin; Left Tooth Implant Alone']}, {'type': 'NO_INTERVENTION', 'label': 'Control', 'description': 'Subjects will be randomized to either receive either left tooth platelet rich fibrin; right tooth implant alone, OR right tooth platelet rich fibrin; left tooth implant alone. Following treatment each tooth is replaced and splinted to the adjacent teeth. Teeth are followed for 3 months and then tested for vitality before extracting and examining histologically.'}], 'interventions': [{'name': 'Left Tooth Platelet Rich Fibrin; Right Tooth Implant Alone', 'type': 'PROCEDURE', 'description': 'All study participants will have two teeth extracted and 2 mm of root removed. Half of the subjects will have platelet rich fibrin endodontic revascularization therapy will be applied to the left tooth socket only. The right tooth is implanted alone. Each tooth is replaced and splinted to the adjacent teeth. Teeth are followed for 3 months and then tested for vitality before extracting and examining histologically.', 'armGroupLabels': ['PRF Treated']}, {'name': 'Right Tooth Platelet Rich Fibrin; Left Tooth Implant Alone', 'type': 'PROCEDURE', 'description': 'All study participants will have two teeth extracted and 2 mm of root removed. Half of the subjects will have platelet rich fibrin endodontic revascularization therapy to the right tooth socket only. The left tooth is implanted alone. Each tooth is replaced and splinted to the adjacent teeth. Teeth are followed for 3 months and then tested for vitality before extracting and examining histologically.', 'armGroupLabels': ['PRF Treated']}]}, 'contactsLocationsModule': {'locations': [{'zip': '68505', 'city': 'Lincoln', 'state': 'Nebraska', 'country': 'United States', 'facility': 'University of Nebraska, College of Dentistry', 'geoPoint': {'lat': 40.8, 'lon': -96.66696}}], 'overallOfficials': [{'name': 'Elisabeth L Easley, DMD', 'role': 'PRINCIPAL_INVESTIGATOR', 'affiliation': 'University of Nebraska'}]}, 'ipdSharingStatementModule': {'ipdSharing': 'NO'}, 'sponsorCollaboratorsModule': {'leadSponsor': {'name': 'University of Nebraska', 'class': 'OTHER'}, 'responsibleParty': {'type': 'SPONSOR'}}}}