Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

2,327 questions · 2,494 findings · 87 reviews · All outcomes

No studies found 450 · 18%GRADE not reported 1,487 · 59.6%Very low 385 · 15.4%Low 121 · 4.9%Moderate 50 · 2%High 1 · 0%

Hyperfractionated radiotherapy vs Conventional (standard) fractionation radiotherapy

Total mortality · People with primary squamous cell carcinoma of the oral cavity (ICD-O C01-C06) or oropharynx (ICD-O C09-C10); head and neck cancer trials…

Hyperfractionated radiotherapy led to lower total mortality compared with conventional (standard) fractionation radiotherapy; GRADE not reported.

1 finding from 1 review

Absorbed drug (fluconazole or ketoconazole) vs Antifungal drugs not absorbed from GI tract

Mycological: eradication of oral candidiasis · Patients with cancer receiving chemotherapy and/or radiotherapy with overt oral candidiasis

Absorbed drug (fluconazole or ketoconazole) led to higher mycological: eradication of oral candidiasis compared with drug not absorbed from GI tract (amphotericin B or nystatin); GRADE not reported.

1 finding from 1 review

Hyaluronic acid gel (brushing) vs Chlorhexidine, 0.2% to 2% (solution or gel)

Plaque · Adults with dental implants and healthy peri-implant soft tissues at baseline

Hyaluronic acid gel (brushing) showed no clear difference in plaque compared with chlorhexidine gel (brushing); GRADE not reported.

1 finding from 1 review

Phosphoric etching (acid) gel vs Mechanical debridement and polishing

Side effects (pain) · Adults with dental implants and healthy peri-implant soft tissues at baseline
1 finding from 1 review

Split‐course radiotherapy (8 fractions, 30 Gy) vs Accelerated radiotherapy

Disease-free survival · People with primary squamous cell carcinoma of the oral cavity (ICD-O C01-C06) or oropharynx (ICD-O C09-C10); head and neck cancer trials…

Split-course radiotherapy showed no clear difference in disease free survival compared with accelerated radiotherapy; GRADE not reported.

1 finding from 1 review

Absorbed drug (fluconazole or ketoconazole) vs Antifungal drugs not absorbed from GI tract

Clinical: eradication of oral candidiasis · Patients with cancer receiving chemotherapy and/or radiotherapy with overt oral candidiasis

Absorbed drug (fluconazole or ketoconazole) led to higher clinical: eradication of oral candidiasis compared with drug not absorbed from GI tract (amphotericin B or nystatin); GRADE not reported.

1 finding from 1 review

Oral gabapentin vs placebo

Number of tender sites on muscles of mastication (palpation index) · Adult patients aged >=18 years, clinically or radiographically diagnosed with TMD (McNeill 1997 criteria); moderate to severe pain of…

Oral gabapentin (anticonvulsant) led to lower number of tender sites on muscles of mastication (palpation index) compared with placebo; GRADE not reported.

1 finding from 1 review

Pre-operative and post-operative radiotherapy vs Post-operative radiotherapy alone

Locoregional control · People with primary squamous cell carcinoma of the oral cavity (ICD-O C01-C06) or oropharynx (ICD-O C09-C10); head and neck cancer trials…

Pre-operative and post-operative radiotherapy showed no clear difference in locoregional control compared with post-operative radiotherapy alone; GRADE not reported.

1 finding from 1 review

Morphine via pharmacokinetically based PCA (PKPCA) vs Morphine via patient-controlled analgesia (PCA)

Daily mean opiate intake per hour · People with cancer receiving chemotherapy or radiotherapy (or both) who have oral mucositis

Morphine via pharmacokinetically based PCA (PKPCA) led to higher daily mean opiate intake per hour compared with morphine via patient-controlled analgesia (PCA); GRADE not reported.

1 finding from 1 review

Clotrimazole (partially absorbed from GI tract) vs placebo

Mycological: eradication of oral candidiasis · Patients with cancer receiving chemotherapy and/or radiotherapy with overt oral candidiasis

Clotrimazole (partially absorbed from GI tract) showed no clear difference in mycological: eradication of oral candidiasis compared with placebo; GRADE not reported.

1 finding from 1 review

Resorbable barrier (guided bone regeneration) vs Non-resorbable barrier (guided bone regeneration)

Bone gain (horizontal - HDD) · Patients receiving immediate single implants in fresh extraction sockets (maxillary anterior/premolar sites)

Resorbable barrier (guided bone regeneration) showed no clear difference in bone gain (horizontal - HDD) compared with non-resorbable barrier (guided bone regeneration); GRADE not reported.

1 finding from 1 review

Neutron radiotherapy vs Conventional photon radiotherapy

Locoregional control · People with primary squamous cell carcinoma of the oral cavity (ICD-O C01-C06) or oropharynx (ICD-O C09-C10); head and neck cancer trials…

Neutron radiotherapy showed no clear difference in locoregional control compared with conventional photon radiotherapy; GRADE not reported.

1 finding from 1 review

Altered fractionation radiotherapy (hyperfractionated and/or accelerated) vs Conventional (standard) fractionation radiotherapy

All‐cause mortality · People with primary squamous cell carcinoma of the oral cavity (ICD-O C01-C06) or oropharynx (ICD-O C09-C10); head and neck cancer trials…

It is very uncertain whether altered fractionation radiotherapy (hyperfractionated and/or… changes mortality compared with conventional (standard) fractionation radiotherapy (very low certainty).

2 findings from 1 review

Oral gabapentin vs placebo

Spontaneous pain in the TMJ (VAS) · Adult patients aged >=18 years, clinically or radiographically diagnosed with TMD (McNeill 1997 criteria); moderate to severe pain of…

Oral gabapentin (anticonvulsant) led to lower spontaneous pain in the TMJ (VAS) compared with placebo; GRADE not reported.

1 finding from 1 review

Patient-controlled analgesia (PCA) pethidine vs Staff-controlled delivery of pethidine

Average pain scores (0-100 VAS) · People with cancer receiving chemotherapy or radiotherapy (or both) who have oral mucositis

Patient-controlled analgesia (PCA) pethidine showed no clear difference in average pain scores (0-100 VAS) compared with staff-controlled delivery of pethidine; GRADE not reported.

1 finding from 1 review

Partially absorbed antifungal drug (e.g., clotrimazole, miconazole) vs Drug not absorbed from GI tract (e.g., nystatin, amphotericin B)

Outcome not reported · Patients with cancer receiving chemotherapy and/or radiotherapy with overt oral candidiasis

The review found no eligible studies for this question.

1 finding from 1 review

Accelerated radiotherapy (no split, boost or hyperfractionation) vs Conventional (standard) fractionation radiotherapy

Total mortality · People with primary squamous cell carcinoma of the oral cavity (ICD-O C01-C06) or oropharynx (ICD-O C09-C10); head and neck cancer trials…
1 finding from 1 review