Deze pagina is automatisch vertaald en de nauwkeurigheid van de vertaling kan niet worden gegarandeerd. Raadpleeg de Engelse versie voor een brontekst.

Hematological Safety of Dipyrone Versus Paracetamol After Dental Extractions

4 november 2026 bijgewerkt door: Matheus Furtado de Carvalho

Hematological Alterations Associated With the Use of Dipyrone Versus Paracetamol After Dental Extractions: a Double-blind, Randomized Clinical Trial

The goal of this clinical trial is to compare the safety of dipyrone and paracetamol when used for pain relief after dental extractions in adults. The study will focus on changes in blood cell counts and will also evaluate liver and kidney function and possible side effects. The main questions it aims to answer are:

  • Do dipyrone and paracetamol have different effects on blood cell counts after dental extractions?
  • Do participants exhibit hepatic and renal alterations?
  • What side effects do participants experience when taking these medications?

Researchers will compare dipyrone and paracetamol to learn more about their safety after dental extractions.

Participants will:

  • Undergo two dental extractions, one during each study period, involving teeth that already need to be removed
  • Take dipyrone 500 mg or paracetamol 750 mg in a random order, taking two capsules every 6 hours for 7 days during each period
  • Have at least 21 days between the two study periods
  • Have three blood collections: one before the first extraction and one on the eighth day after each extraction
  • Keep a diary of their pain, medication use, and possible side effects
  • Have their blood pressure checked and attend clinic visits and telephone follow-ups to monitor their health

Studie Overzicht

Toestand

Werving

Conditie

Interventie / Behandeling

Gedetailleerde beschrijving

Dental extractions are commonly followed by pain, and medications such as dipyrone and paracetamol are used to help relieve this pain. Although both medications are widely used, it is important to better understand their safety, particularly their possible effects on blood cell counts.

This clinical trial aims to compare the safety of dipyrone and paracetamol in adults undergoing dental extractions. The main focus is to evaluate changes in blood cell counts, including white blood cells, neutrophils, red blood cells, and platelets. The study will also assess blood tests related to liver and kidney function, changes in blood pressure and possible side effects during treatment.

Participants will undergo two dental extractions, one during each study period, involving teeth that already require removal. The order in which participants receive the medications will be determined randomly. During one study period, participants will receive dipyrone 500 mg per dose, and during the other, they will receive paracetamol 750 mg per dose. Each dose will consist of two capsules. The medications will be provided in identical capsules and will be prepared by a compounding pharmacy in Brazil, according to the study protocol. Neither participants nor researchers will know which medication is being used during each period. Each treatment period will last 7 days, with two capsules taken every 6 hours, according to the study protocol. The two study periods will be separated by at least 21 days.

Blood samples will be collected three times: before the first dental extraction and on the eighth day after each extraction. These tests will allow researchers to compare blood cell counts and other laboratory results before and after each medication period. Participants will also record their pain levels, medication use, and possible side effects in a diary. Blood pressure will be monitored, and clinical assessments and telephone contacts will be used to follow participants' health and identify possible adverse reactions.

By comparing the results obtained during the two treatment periods, researchers hope to improve understanding of the safety of dipyrone and paracetamol when used after dental extractions. The findings may contribute to evidence-based decisions about pain management following dental surgery.

Studietype

Ingrijpend

Inschrijving (Geschat)

50

Fase

  • Fase 4

Contacten en locaties

In dit gedeelte vindt u de contactgegevens van degenen die het onderzoek uitvoeren en informatie over waar dit onderzoek wordt uitgevoerd.

Studie Locaties

  • Brazilië
    • Minas Gerais
      • Juiz de Fora, Minas Gerais, Brazilië, 36036-900

Deelname Criteria

Onderzoekers zoeken naar mensen die aan een bepaalde beschrijving voldoen, de zogenaamde geschiktheidscriteria. Enkele voorbeelden van deze criteria zijn iemands algemene gezondheidstoestand of eerdere behandelingen.

Geschiktheidscriteria

Leeftijden die in aanmerking komen voor studie

18 jaar tot 60 jaar (Volwassen)

Accepteert gezonde vrijwilligers

Ja

Geslachten die in aanmerking komen voor studie

Allemaal

Beschrijving

Inclusion Criteria:

  • Healthy patients of both sexes, aged 18 to 60 years
  • Indication for bilateral tooth extraction in similar positions

Exclusion Criteria:

  • History of allergy to dipyrone or paracetamol.
  • Insufficient or improperly completed study records.
  • Failure to return for the second tooth extraction.
  • Use of warfarin, bupropion, efavirenz, methadone, cyclosporine, tacrolimus, sertraline, valproate, methotrexate, acetylsalicylic acid, or other non-steroidal anti-inflammatory drugs (NSAIDs), analgesics, or corticosteroids on a continuous basis (for 7 days or longer) prior to surgery.
  • Systemic conditions that could interfere with hematological outcomes, including diagnosed hematological disorders, coagulopathies, severe liver or kidney disease, or active autoimmune diseases at the time of the appointment.

Studie plan

Dit gedeelte bevat details van het studieplan, inclusief hoe de studie is opgezet en wat de studie meet.

Hoe is de studie opgezet?

Ontwerpdetails

  • Primair doel: Behandeling
  • Toewijzing: Gerandomiseerd
  • Interventioneel model: Crossover-opdracht
  • Masker: Dubbele

Wapens en interventies

Deelnemersgroep / Arm
Interventie / Behandeling
Experimenteel: Arm 1: Paracetamol followed by dipyrone

Participants receive paracetamol 750 mg per dose during the first treatment period, following the first dental extraction, and dipyrone 500 mg per dose during the second treatment period, following the second dental extraction, according to the randomized crossover sequence. Each treatment is administered as two capsules every 6 hours for 7 days, with a washout period between treatments.
Geneesmiddel: Dipyrone administration

Dipyrone 500 mg per dose, administered orally as two capsules every 6 hours for 7 days following dental extraction, according to the study protocol.

Geneesmiddel: Paracetamol (drug)

Paracetamol 750 mg per dose, administered orally as two capsules every 6 hours for 7 days following dental extraction, according to the study protocol

Procedure: blood sampling

Blood samples will be collected at three time points: before the first dental extraction, on the eighth day after the first treatment period, and on the eighth day after the second treatment period.
Experimenteel: Dipyrone followed by paracetamol

Participants receive dipyrone 500 mg per dose during the first treatment period, following the first dental extraction, and paracetamol 750 mg per dose during the second treatment period, following the second dental extraction, according to the randomized crossover sequence. Each treatment is administered as two capsules every 6 hours for 7 days, with a washout period between treatments.
Geneesmiddel: Dipyrone administration

Dipyrone 500 mg per dose, administered orally as two capsules every 6 hours for 7 days following dental extraction, according to the study protocol.

Geneesmiddel: Paracetamol (drug)

Paracetamol 750 mg per dose, administered orally as two capsules every 6 hours for 7 days following dental extraction, according to the study protocol

Procedure: blood sampling

Blood samples will be collected at three time points: before the first dental extraction, on the eighth day after the first treatment period, and on the eighth day after the second treatment period.

Wat meet het onderzoek?

Primaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
White Blood Cell Parameters.
Tijdsspanne: Before the first dental extraction, day 8 after the first dental extraction, and day 8 after the second dental extraction.

Total leukocyte count and neutrophil count will be assessed through blood samples and reported as cells/mm³, to evaluate changes following treatment with dipyrone and paracetamol after dental extractions.
Before the first dental extraction, day 8 after the first dental extraction, and day 8 after the second dental extraction.
Hemoglobin Level.
Tijdsspanne: Before the first dental extraction, day 8 after the first dental extraction, and day 8 after the second dental extraction.

Hemoglobin level will be assessed in blood samples, and reported as g/dL, to evaluate changes following treatment with dipyrone and paracetamol after dental extractions.
Before the first dental extraction, day 8 after the first dental extraction, and day 8 after the second dental extraction.
Hematocrit.
Tijdsspanne: Before the first dental extraction, day 8 after the first dental extraction, and day 8 after the second dental extraction.

Hematocrit will be assessed in blood samples, and reported as %, to evaluate changes following treatment with dipyrone and paracetamol after dental extractions.
Before the first dental extraction, day 8 after the first dental extraction, and day 8 after the second dental extraction.
Platelet Count
Tijdsspanne: Before the first dental extraction, day 8 after the first dental extraction, and day 8 after the second dental extraction.

Platelet count will be assessed in blood samples, and reported as cells/mm³, to evaluate changes following treatment with dipyrone and paracetamol after dental extractions.
Before the first dental extraction, day 8 after the first dental extraction, and day 8 after the second dental extraction.

Secundaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Changes in Liver Function Biomarkers.
Tijdsspanne: Before the first dental extraction, day 8 after the first dental extraction, and day 8 after the second dental extraction.

Changes in aspartate aminotransferase (AST), alanine aminotransferase (ALT), gamma-glutamyl transferase (GGT), and alkaline phosphatase levels will be assessed through blood samples collected during the study, and reported as U/L.
Before the first dental extraction, day 8 after the first dental extraction, and day 8 after the second dental extraction.
Changes in Kidney Function Biomarkers.
Tijdsspanne: Before the first dental extraction, day 8 after the first dental extraction, and day 8 after the second dental extraction.

Changes in creatinine and urea levels will be assessed through blood samples collected during the study, and reported as mg/dL.
Before the first dental extraction, day 8 after the first dental extraction, and day 8 after the second dental extraction.
Adverse Reactions.
Tijdsspanne: Daily, from day 1 to day 7 after each dental extraction.

Occurrence of adverse reactions associated with dipyrone and paracetamol will be monitored and recorded during each postoperative treatment period.
Daily, from day 1 to day 7 after each dental extraction.
Systolic Blood Pressure
Tijdsspanne: Before the first dental extraction, day 8 after the first dental extraction, and day 8 after the second dental extraction.

Systolic blood pressure measurements will be recorded to evaluate changes during treatment with dipyrone and paracetamol after dental extractions, and reported as mmHg
Before the first dental extraction, day 8 after the first dental extraction, and day 8 after the second dental extraction.
Diastolic Blood Pressure.
Tijdsspanne: Before the first dental extraction, day 8 after the first dental extraction, and day 8 after the second dental extraction.

Diastolic blood pressure measurements will be recorded to evaluate changes during treatment with dipyrone and paracetamol after dental extractions, and reported as mmHg
Before the first dental extraction, day 8 after the first dental extraction, and day 8 after the second dental extraction.

Medewerkers en onderzoekers

Hier vindt u mensen en organisaties die betrokken zijn bij dit onderzoek.

Sponsor

Matheus Furtado de Carvalho

Publicaties en nuttige links

De persoon die verantwoordelijk is voor het invoeren van informatie over het onderzoek stelt deze publicaties vrijwillig ter beschikking. Dit kan gaan over alles wat met het onderzoek te maken heeft.

Algemene publicaties

Studie record data

Deze datums volgen de voortgang van het onderzoeksdossier en de samenvatting van de ingediende resultaten bij ClinicalTrials.gov. Studieverslagen en gerapporteerde resultaten worden beoordeeld door de National Library of Medicine (NLM) om er zeker van te zijn dat ze voldoen aan specifieke kwaliteitscontrolenormen voordat ze op de openbare website worden geplaatst.

Bestudeer belangrijke data

Studie start (Geschat)

13 november 2026

Primaire voltooiing (Geschat)

31 juli 2027

Studie voltooiing (Geschat)

31 juli 2027

Studieregistratiedata

Eerst ingediend

27 oktober 2026

Eerst ingediend dat voldeed aan de QC-criteria

4 november 2026

Eerst geplaatst (Werkelijk)

5 november 2026

Updates van studierecords

Laatste update geplaatst (Werkelijk)

5 november 2026

Laatste update ingediend die voldeed aan QC-criteria

4 november 2026

Laatst geverifieerd

1 oktober 2026

Meer informatie

Termen gerelateerd aan deze studie

Trefwoorden

Aanvullende relevante MeSH-voorwaarden

Andere studie-ID-nummers

  • 97343326.1.0000.5147

Plan Individuele Deelnemersgegevens (IPD)

Bent u van plan om gegevens van individuele deelnemers (IPD) te delen?

NEE

Beschrijving IPD-plan

Individual participant data will not be shared with researchers outside the study team. Data access will be restricted to authorized researchers, and participant confidentiality will be protected through data coding, password-protected digital files, and restricted access to physical documents, in accordance with applicable data protection requirements.

Informatie over medicijnen en apparaten, studiedocumenten

Bestudeert een door de Amerikaanse FDA gereguleerd geneesmiddel

Nee

Bestudeert een door de Amerikaanse FDA gereguleerd apparaatproduct

Nee

Deze informatie is zonder wijzigingen rechtstreeks van de website clinicaltrials.gov gehaald. Als u verzoeken heeft om uw onderzoeksgegevens te wijzigen, te verwijderen of bij te werken, neem dan contact op met register@clinicaltrials.gov. Zodra er een wijziging wordt doorgevoerd op clinicaltrials.gov, wordt deze ook automatisch bijgewerkt op onze website .

Abonneren