Findings

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Evidence found and GRADE certainty

16 questions · 16 findings · 4 reviews · Oral Health

No studies found 0 · 0%GRADE not reported 9 · 56.3%Very low 7 · 43.8%Low 0 · 0%Moderate 0 · 0%High 0 · 0%

0.2% zinc sulphate toothpaste vs Placebo toothpaste (without zinc)

Volatile sulphur compounds (VSC), halimeter · Adolescents and adults aged over 16 years with clinical or self-assessed halitosis of oral origin; excluding induced or physiological…

0.2% zinc sulphate toothpaste led to lower volatile sulphur compounds (VSC) compared with placebo toothpaste (without zinc); GRADE not reported.

1 finding from 1 review

0.2% zinc sulphate toothpaste vs Placebo toothpaste (without zinc)

Dentist-reported organoleptic test (OLT) score (scale 0 to 5) · Adolescents and adults aged over 16 years with clinical or self-assessed halitosis of oral origin; excluding induced or physiological…

It is very uncertain whether 0.2% zinc sulphate toothpaste changes dentist-reported organoleptic test (OLT) score (scale 0 to 5) compared with placebo toothpaste (without zinc) (very low certainty).

1 finding from 1 review

Zinc vs placebo

Taste discrimination improvement · Patients with taste disturbances (dysgeusia/hypogeusia; idiopathic, zinc-deficient, or secondary to chronic renal failure)
1 finding from 1 review
  • Interventions for managing taste disturbances 2017 · Cochrane All outcomes
    Results: Matson 2003 used zinc sulphate for testing taste discrimination (sip and spit method); the trial did not report the details of the placebo group and thus the results could not be meta-analysed. Not GRADE-rated.
    1 study
    GRADE not reported

Zinc vs placebo

Taste acuity improvement - objective outcome (continuous) - individual taste sensations · Patients with taste disturbances (dysgeusia/hypogeusia; idiopathic, zinc-deficient, or secondary to chronic renal failure)

Zinc supplements (zinc sulphate, zinc gluconate, zinc picolinate,… showed no clear difference in taste acuity improvement - objective outcome (continuous) -… compared with placebo; GRADE not reported.

1 finding from 1 review
  • Interventions for managing taste disturbances 2017 · Cochrane All outcomes
    Chronic renal failure
    Results (Mahajan 1980, chronic renal failure; Analysis 1.3): mean difference by taste sensation - salt MD 285 (95% CI 238.75 to 331.25); sweet MD 190 (142.36 to 237.64); sour MD 10 (-16.43 to 36.43); bitter MD 2.40…
    1 study · 22 participants
    GRADE not reported

Zinc vs placebo

Taste acuity improvement - objective outcome (continuous) - taste detection (cross-over trial) · Patients with taste disturbances (dysgeusia/hypogeusia; idiopathic, zinc-deficient, or secondary to chronic renal failure)

It is very uncertain whether zinc supplements (zinc sulphate, zinc gluconate, zinc picolinate,… changes taste acuity improvement - objective outcome (continuous) - taste… compared with placebo (very low certainty).

1 finding from 1 review

Zinc vs placebo

Taste acuity improvement - patient-reported outcome · Patients with taste disturbances (dysgeusia/hypogeusia; idiopathic, zinc-deficient, or secondary to chronic renal failure)

It is very uncertain whether zinc supplements (zinc sulphate, zinc gluconate, zinc picolinate,… changes taste acuity improvement - patient-reported outcome compared with placebo (very low certainty).

1 finding from 1 review

Zinc vs placebo

Taste acuity improvement - objective outcome (continuous) - taste recognition (cross-over trial) · Patients with taste disturbances (dysgeusia/hypogeusia; idiopathic, zinc-deficient, or secondary to chronic renal failure)

It is very uncertain whether zinc supplements (zinc sulphate, zinc gluconate, zinc picolinate,… changes taste acuity improvement - objective outcome (continuous) - taste… compared with placebo (very low certainty).

1 finding from 1 review

Zinc vs placebo

Health‐related quality of life · Patients with taste disturbances (dysgeusia/hypogeusia; idiopathic, zinc-deficient, or secondary to chronic renal failure)
1 finding from 1 review
  • Interventions for managing taste disturbances 2017 · Cochrane All outcomes
    Results (health-related quality of life): None of the studies reported data on health-related quality of life. Heckmann 2005 (zinc) reported that signs of depression were less severe (Beck Depression Inventory P<0.05;…
    1 study
    GRADE not reported

Zinc vs placebo

Taste acuity improvement - objective outcome (dichotomous) - chronic renal failure · Patients with taste disturbances (dysgeusia/hypogeusia; idiopathic, zinc-deficient, or secondary to chronic renal failure)

Zinc supplements (zinc sulphate, zinc gluconate, zinc picolinate,… led to higher taste acuity improvement - objective outcome (dichotomous) - chronic… compared with placebo; GRADE not reported.

1 finding from 1 review

Zinc vs placebo

Taste acuity improvement - objective outcome (continuous data) · Patients with taste disturbances (dysgeusia/hypogeusia; idiopathic, zinc-deficient, or secondary to chronic renal failure)

It is very uncertain whether zinc supplements (zinc sulphate, zinc gluconate, zinc picolinate,… changes taste acuity improvement - objective outcome (continuous data) compared with placebo (very low certainty).

1 finding from 1 review

Zinc vs placebo

Adverse events · Patients with taste disturbances (dysgeusia/hypogeusia; idiopathic, zinc-deficient, or secondary to chronic renal failure)

It is very uncertain whether zinc supplements (zinc sulphate, zinc gluconate, zinc picolinate,… changes adverse events compared with placebo (very low certainty).

1 finding from 1 review

Zinc vs placebo

Taste acuity improvement - objective outcome (dichotomous data) · Patients with taste disturbances (dysgeusia/hypogeusia; idiopathic, zinc-deficient, or secondary to chronic renal failure)

It is very uncertain whether zinc supplements (zinc sulphate, zinc gluconate, zinc picolinate,… changes taste acuity improvement - objective outcome (dichotomous data) compared with placebo (very low certainty).

1 finding from 1 review

Ferric sulphate (FS)/zinc oxide and eugenol (ZOE) pulpotomy vs Sedanol (ZOE) pulpectomy

Radiological failure · Children with extensive decay involving the dental pulp in primary teeth

Ferric sulphate (FS)/zinc oxide and eugenol (ZOE) pulpotomy showed no clear difference in radiological failure compared with sedanol (ZOE) pulpectomy; GRADE not reported.

1 finding from 1 review