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The Effect of Ozone on Salivary Flow in Patients With Xerostomia and Hyposalivation After Radiotherapy (OZONEXEROSTOMI) (ozonexerostomi)

4 maja 2026 zaktualizowane przez: Sergio Bruzadelli Macedo, University of Brasilia

The Effect of Ozone Therapy on Salivary Flow and Quality of Life in Patients With Xerostomia and Hyposalivation After Head and Neck Radiotherapy

Patients who underwent head and neck radiotherapy and developed xerostomia and/or hyposalivation will be selected. The patients will be randomly assigned into two groups, defined as control and treatment.

All patients will complete the xerostomia-related quality of life questionnaires, XeQoLS (Xerostomia Quality of Life Scale) and OHIP (Oral Health Impact Profile). This qualitative assessment will be repeated 1 week after the 6th application and 1 week after the 12th application (T0, T6, and T12).

The quantitative assessment will be carried out through the collection of unstimulated and stimulated saliva at the same time points (T0, T6, and T12).

Patients will undergo 12 sessions of ozone therapy, once a week, in gaseous form, at a concentration of 10 µg/mL (micrograms per milliliter), applied directly into the major salivary glands.

The gas will be administered as follows:

  • Parotid glands: two distinct points per gland, 1 mL at each point.
  • Submandibular glands: one point per gland, 1 mL per point at 10 µg/mL.
  • Sublingual glands: one point per gland, 1 mL per point at 10 µg/mL. The ozone generator equipment will be supplied with medical oxygen (99.5% purity), Dental model, Philozon company.

Disposable syringes will be Terumo, 10 mL, and the needle will be BD, 30/13 mm.

Przegląd badań

Status

Jeszcze nie rekrutacja

Warunki

Interwencja / Leczenie

Typ studiów

Interwencyjne

Zapisy (Szacowany)

100

Faza

  • Nie dotyczy

Kontakty i lokalizacje

Ta sekcja zawiera dane kontaktowe osób prowadzących badanie oraz informacje o tym, gdzie badanie jest przeprowadzane.

Kontakt w sprawie studiów

  • Nazwa: Sergio B Macedo, PhD
  • Numer telefonu: +5561981276050
  • E-mail: bruzadelli@unb.br

Kryteria uczestnictwa

Badacze szukają osób, które pasują do określonego opisu, zwanego kryteriami kwalifikacyjnymi. Niektóre przykłady tych kryteriów to ogólny stan zdrowia danej osoby lub wcześniejsze leczenie.

Kryteria kwalifikacji

Wiek uprawniający do nauki

  • Dorosły
  • Starszy dorosły

Akceptuje zdrowych ochotników

Nie

Opis

Inclusion Criteria:

  • Patients who have undergone head and neck radiotherapy
  • Patient who have developed xerostomia
  • Patient who have developed hyposalivation

Exclusion Criteria:

  • Patients with active malignant disease
  • Patients who do not agree to sign the informed consent form

Plan studiów

Ta sekcja zawiera szczegółowe informacje na temat planu badania, w tym sposób zaprojektowania badania i jego pomiary.

Jak projektuje się badanie?

Szczegóły projektu

  • Główny cel: Leczenie
  • Przydział: Randomizowane
  • Model interwencyjny: Przydział równoległy
  • Maskowanie: Podwójnie

Broń i interwencje

Grupa uczestników / Arm
Interwencja / Leczenie
Eksperymentalny: ozone therapy

Ozone gas will be applied as follows:

  • Parotid glands: two distinct points per gland, 1 mL at each point (10 µg/mL). The anatomical reference will be the parotid region, located anterior and inferior to the external ear.
  • Submandibular glands: one point per gland, 1 mL at 10 µg/mL. The anatomical reference will be the mandibular base, anterior to the angle, considering its inner aspect.
  • Sublingual glands: one point per gland, 1 mL at 10 µg/mL. The anatomical reference will be the region of the lower lateral incisor, lingual aspect, punctured through the floor of the mouth mucosa, adjacent to the lingual surface of the mandibular bone.

The ozone generator (Dental model, Philozon, Brazil) will be supplied with medical oxygen (99.5% purity).
Inny: Ozone therapy

Experimental: Ozone Therapy

Ozone gas will be applied as follows:

  • Parotid glands: two distinct points per gland, 1 mL at each point (10 µg/mL). The anatomical reference will be the parotid region, located anterior and inferior to the external ear.
  • Submandibular glands: one point per gland, 1 mL at 10 µg/mL. The anatomical reference will be the mandibular base, anterior to the angle, considering its inner aspect.
  • Sublingual glands: one point per gland, 1 mL at 10 µg/mL. The anatomical reference will be the region of the lower lateral incisor, lingual aspect, punctured through the floor of the mouth mucosa, adjacent to the lingual surface of the mandibular bone.

The ozone generator (Dental model, Philozon, Brazil) will be supplied with medical oxygen (99.5% purity).
Brak interwencji: no treatment
Patients in the control group will not receive any treatment but will complete the xerostomia-related quality of life questionnaires and undergo salivary flow assessment at T0, T6, and T12

Co mierzy badanie?

Podstawowe miary wyniku

Miara wyniku
Opis środka
Ramy czasowe
Salivary flow
Ramy czasowe: Time 0 weeks

The assessment of unstimulated salivary flow will be conducted according to the technique described by Kogawa et al., 2016.

The patient will receive a sterile vial, keep the body slightly leaning forward, place the vial touching the lower lip, and allow saliva to flow into the vial spontaneously for 5 minutes. The unit of measurement will be in microliters.
Time 0 weeks
Salivary flow
Ramy czasowe: time 6 weeks

The assessment of unstimulated salivary flow will be conducted according to the technique described by Kogawa et al., 2016.

The patient will receive a sterile vial, keep the body slightly leaning forward, place the vial touching the lower lip, and allow saliva to flow into the vial spontaneously for 5 minutes. The unit of measurement will be in microliters.
time 6 weeks
Salivary Flow
Ramy czasowe: 12 week
The assessment of unstimulated salivary flow will be conducted according to the technique described by Kogawa et al., 2016. The patient will receive a sterile vial, keep the body slightly leaning forward, place the vial touching the lower lip, and allow saliva to flow into the vial spontaneously for 5 minutes. The unit of measurement will be in microliters.
12 week
Salivary flow
Ramy czasowe: Time 0 weeks
The assessment of stimulated salivary flow will be conducted according to the technique described by Kogawa et al., 2016. The patient will receive a sterile vial, keep the body slightly leaning forward, place the vial touching the lower lip, and allow saliva to flow into the vial spontaneously for 5 minutes. Stimulated saliva will be collected using the same procedure, preceded by chewing a piece of silicone for 1 minute. The unit of measurement will be in microliters.
Time 0 weeks
Salivary flow
Ramy czasowe: Time 6 weeks
The assessment of stimulated salivary flow will be conducted according to the technique described by Kogawa et al., 2016. The patient will receive a sterile vial, keep the body slightly leaning forward, place the vial touching the lower lip, and allow saliva to flow into the vial spontaneously for 5 minutes. Stimulated saliva will be collected using the same procedure, preceded by chewing a piece of silicone for 1 minute. The unit of measurement will be in microliters.
Time 6 weeks
Salivary flow
Ramy czasowe: Time 12 weeks
The assessment of stimulated salivary flow will be conducted according to the technique described by Kogawa et al., 2016. The patient will receive a sterile vial, keep the body slightly leaning forward, place the vial touching the lower lip, and allow saliva to flow into the vial spontaneously for 5 minutes. Stimulated saliva will be collected using the same procedure, preceded by chewing a piece of silicone for 1 minute. The unit of measurement will be in microliters.
Time 12 weeks

Miary wyników drugorzędnych

Miara wyniku
Opis środka
Ramy czasowe
Xerostomia-Related Quality of Life Scale (XeQoLS)
Ramy czasowe: time 0 weeks
The Xerostomia-Related Quality of Life Scale (XeQoLS) consists of 15 items, each scored from 0 to 4 according to the severity of xerostomia impact. The final score is calculated as the mean of all items, resulting in a total score ranging from 0 to 4, where 0 indicates no impact and 4 indicates maximum impact. Higher scores indicate worse xerostomia-related quality of life.
time 0 weeks
Xerostomia-Related Quality of Life Scale (XeQoLS)
Ramy czasowe: time 6 weeks
The Xerostomia-Related Quality of Life Scale (XeQoLS) consists of 15 items, each scored from 0 to 4 according to the severity of xerostomia impact. The final score is calculated as the mean of all items, resulting in a total score ranging from 0 to 4, where 0 indicates no impact and 4 indicates maximum impact. Higher scores indicate worse xerostomia-related quality of life.
time 6 weeks
Xerostomia-Related Quality of Life Scale (XeQoLS)
Ramy czasowe: time 12 weeks
The Xerostomia-Related Quality of Life Scale (XeQoLS) consists of 15 items, each scored from 0 to 4 according to the severity of xerostomia impact. The final score is calculated as the mean of all items, resulting in a total score ranging from 0 to 4, where 0 indicates no impact and 4 indicates maximum impact. Higher scores indicate worse xerostomia-related quality of life.
time 12 weeks
Oral Health Impact Profile-14 (OHIP-14)
Ramy czasowe: time 0 weeks

The Oral Health Impact Profile-14 (OHIP-14) is a validated questionnaire consisting of 14 items assessing the impact of oral health on quality of life. Each item is scored from 0 to 4 based on frequency of impact (0 = never, 1 = hardly ever, 2 = occasionally, 3 = fairly often, 4 = very often).

The total score is calculated as the sum of all items, ranging from 0 to 56, with higher scores indicating worse oral health-related quality of life.
time 0 weeks
Oral Health Impact Profile-14 (OHIP-14)
Ramy czasowe: time 6 weeks

The Oral Health Impact Profile-14 (OHIP-14) is a validated questionnaire consisting of 14 items assessing the impact of oral health on quality of life. Each item is scored from 0 to 4 based on frequency of impact (0 = never, 1 = hardly ever, 2 = occasionally, 3 = fairly often, 4 = very often).

The total score is calculated as the sum of all items, ranging from 0 to 56, with higher scores indicating worse oral health-related quality of life.
time 6 weeks
Oral Health Impact Profile-14 (OHIP-14)
Ramy czasowe: time 12 weeks

The Oral Health Impact Profile-14 (OHIP-14) is a validated questionnaire consisting of 14 items assessing the impact of oral health on quality of life. Each item is scored from 0 to 4 based on frequency of impact (0 = never, 1 = hardly ever, 2 = occasionally, 3 = fairly often, 4 = very often).

The total score is calculated as the sum of all items, ranging from 0 to 56, with higher scores indicating worse oral health-related quality of life.
time 12 weeks

Współpracownicy i badacze

Tutaj znajdziesz osoby i organizacje zaangażowane w to badanie.

Sponsor

University of Brasilia

Daty zapisu na studia

Daty te śledzą postęp w przesyłaniu rekordów badań i podsumowań wyników do ClinicalTrials.gov. Zapisy badań i zgłoszone wyniki są przeglądane przez National Library of Medicine (NLM), aby upewnić się, że spełniają określone standardy kontroli jakości, zanim zostaną opublikowane na publicznej stronie internetowej.

Główne daty studiów

Rozpoczęcie studiów (Szacowany)

15 lipca 2026

Zakończenie podstawowe (Szacowany)

15 lipca 2027

Ukończenie studiów (Szacowany)

15 stycznia 2028

Daty rejestracji na studia

Pierwszy przesłany

27 kwietnia 2026

Pierwszy przesłany, który spełnia kryteria kontroli jakości

4 maja 2026

Pierwszy wysłany (Rzeczywisty)

6 maja 2026

Aktualizacje rekordów badań

Ostatnia wysłana aktualizacja (Rzeczywisty)

6 maja 2026

Ostatnia przesłana aktualizacja, która spełniała kryteria kontroli jakości

4 maja 2026

Ostatnia weryfikacja

1 maja 2026

Więcej informacji

Terminy związane z tym badaniem

Słowa kluczowe

Dodatkowe istotne warunki MeSH

Inne numery identyfikacyjne badania

  • 66681722.6.0000.0030

Plan dla danych uczestnika indywidualnego (IPD)

Planujesz udostępniać dane poszczególnych uczestników (IPD)?

TAK

Opis planu IPD

Individual data will be made available as supplementary material in the final publication.

Typ informacji pomocniczych dotyczących udostępniania IPD

  • PROTOKÓŁ BADANIA

Informacje o lekach i urządzeniach, dokumenty badawcze

Bada produkt leczniczy regulowany przez amerykańską FDA

Nie

Bada produkt urządzenia regulowany przez amerykańską FDA

Nie

Te informacje zostały pobrane bezpośrednio ze strony internetowej clinicaltrials.gov bez żadnych zmian. Jeśli chcesz zmienić, usunąć lub zaktualizować dane swojego badania, skontaktuj się z register@clinicaltrials.gov. Gdy tylko zmiana zostanie wprowadzona na stronie clinicaltrials.gov, zostanie ona automatycznie zaktualizowana również na naszej stronie internetowej .

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