{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Defective+Tooth+Restorations",
    "query": {
      "condition": "Defective Tooth Restorations"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 4,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-06-26T05:39:57.917Z",
  "attribution": "Data derived from public ClinicalTrials.gov records. The official record at https://clinicaltrials.gov/ remains the source of truth for current availability, contacts, and full study details.",
  "notes": [
    "This endpoint exposes only public summary fields — no participant contact emails, phone numbers, or scraped investigator contact details.",
    "For contact information and full protocol detail, follow each trial's `official_url` to the ClinicalTrials.gov record.",
    "This API is a navigational aid. It does not provide medical advice, eligibility determinations, or compensation guarantees."
  ],
  "trials": [
    {
      "nct_id": "NCT01925040",
      "title": "Comparison of 2 Different Resin Based Filling Materials in Posterior Teeth - a Multicenter Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Caries",
        "Unsatisfactory or Defective Restoration of Tooth"
      ],
      "interventions": [
        {
          "name": "Placement of restoration",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Heraeus Kulzer GmbH",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 130,
      "start_date": "2013-06",
      "completion_date": "2022-07",
      "has_results": true,
      "last_update_posted_date": "2024-10-28",
      "last_synced_at": "2026-06-26T05:39:57.917Z",
      "location_count": 1,
      "location_summary": "Portland, Oregon",
      "locations": [
        {
          "city": "Portland",
          "state": "Oregon"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01925040"
    },
    {
      "nct_id": "NCT04686422",
      "title": "Clinical Evaluation of a Bulk Fill Resin Composite",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Dental Caries",
        "Unsatisfactory or Defective Restoration of Tooth"
      ],
      "interventions": [
        {
          "name": "Tetric PowerFill",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Ivoclar Vivadent AG",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": "90 Years",
        "sex": "ALL",
        "summary": "19 Years to 90 Years"
      },
      "enrollment_count": 39,
      "start_date": "2017-12-01",
      "completion_date": "2021-06-30",
      "has_results": true,
      "last_update_posted_date": "2025-10-23",
      "last_synced_at": "2026-06-26T05:39:57.917Z",
      "location_count": 1,
      "location_summary": "Birmingham, Alabama",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04686422"
    },
    {
      "nct_id": "NCT02572570",
      "title": "Clinical Investigation of a New Bulk Fill Composite Resin in the Restoration of Posterior Teeth",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Dental Restoration Failure of Marginal Integrity",
        "Dental Caries",
        "Unrepairable Overhanging of Dental Restorative Materials",
        "Poor Aesthetics of Existing Restoration",
        "Secondary Dental Caries Associated With Failed or Defective Dental Restorations",
        "Fractured Dental Restorative Materials Without Loss of Materials",
        "Fracture of Dental Restorative Materials With Loss of Material"
      ],
      "interventions": [
        {
          "name": "Filtek Bulk Fill Posterior",
          "type": "DEVICE"
        },
        {
          "name": "Filtek Supreme Ultra",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "University of North Carolina, Chapel Hill",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "18 Years to 99 Years"
      },
      "enrollment_count": 27,
      "start_date": "2015-12",
      "completion_date": "2019-12-05",
      "has_results": true,
      "last_update_posted_date": "2020-12-19",
      "last_synced_at": "2026-06-26T05:39:57.917Z",
      "location_count": 1,
      "location_summary": "Chapel Hill, North Carolina",
      "locations": [
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02572570"
    },
    {
      "nct_id": "NCT04708223",
      "title": "Prospective, Split-mouth, Comparative Study to Compare Clinical Outcomes of Two Different Posterior Composite",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Caries",
        "Defective Tooth Restorations"
      ],
      "interventions": [
        {
          "name": "Direct restorative treatment with fast-curing composites (Tetric PowerFill/ Tetric PowerFlow)",
          "type": "DEVICE"
        },
        {
          "name": "Direct restorative treatment with conventionally applied composites (Tetric EvoCeram Bulk Fill/ Tetric EvoFlow Bulk Fill)",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Ivoclar Vivadent AG",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 51,
      "start_date": "2018-09-01",
      "completion_date": "2022-05-16",
      "has_results": true,
      "last_update_posted_date": "2025-10-23",
      "last_synced_at": "2026-06-26T05:39:57.917Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04708223"
    }
  ]
}