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. 2021 Apr 23;18(9):4506. doi: 10.3390/ijerph18094506

Table 3.

Published data about dental practitioners’KAP on OSCC.

Knowledge Attitude Practice
References Participants Quality Assessment Risk Factors Precancerous Lesions Clinical Picture Common Sites of Development Opinion History Taking Physical Examination
Aldossri et al.,
2020 [17]
932 >75% Tobacco 99.5%
Alcohol 97.2%
Prior OSCC 98.6%
HPV 88.2%
Elderly 69.6%
Diet 31.8%
N.A. Ulcer 99.7%
Red patch 98.6%
White patch 98.6%
Dysphagia 93.9%
Paraesthesia 96%
Airway obstruction 89.3%
Oral bleeding 86.6%
Pain 85.1%
Trismus 65.5%
Chronic earache 58.1%
N.A. Visual examination is effective in early detection 97.9%
Skills in neck examination 96.1%
Up-to-date personal knowledge 92.4%
Skills in auxiliary devices 83.2%
Skills in RX 76.5%
Smoking cessation is effective 39.6%
Biopsy is mandatory 35.4%
Advice HPV vaccine 29.5%
Alcohol cessation is effective 22.3%
N.A. N.A.
da Silva Leonel et al.,
2019 [18]
71 <75% Tobacco 100%
Alcohol 98.6%
Sun exposure 97.2%
Family history 95.8%
Elderly 93%
Ill-fitting prothesis 88.7%
Emotional stress 78.9%
Poor oral hygiene 78.9%
Presence of decay teeth 74.6%
Diet 59.2%
Oral sex 50.7%
Hot food and drink 46.5%
Drug abuse 21.1%
Leukoplakia 85.9%
Candidiasis 5.6%
Stomatitis 4.2%
Blistering 1.4%
OSCC diagnosis (III/IV stage) 76.1%
OSCC 66.2%
Tongue and floor of the mouth 71.9%
Buccal mucosa 11.2%
Palate 4.2%
Gingival 2.8%
Key role of dentist 98.6%
Need of CE 95.8%
Lack of patients’ knowledge 84.5%
Adequate knowledge 66.2%
Previous CE courses 49.3%
Undergraduate training was adequate 43.7%
Diagnostic procedure experience 26.8%
N.A. Intra- and extraoral 98.6%
Jboor et al.,
2019 [19]
177 >75% Tobacco 97.4%
Prior OSCC 94.3%
Alcohol 93.2%
HPV 85.3%
Betel quid chewing 74.5%
Elderly 72.8%
Sun exposure 63.3%
Gutka use 49.1%
Diet 28.2%
Erythroplakia & Leukoplakia 53.7% OSCC 84.2%
Positive lymph node 75.7%
Red patch 66.7%
Tongue high-risk area 46.3%
OSCC diagnosis (III/IV stage) 39%
OSCC time diagnosis > 60 years 31.6%
Asymptomatic at early stage 21.5%
Tongue 77.9%
Floor of the mouth 54.2%
Smoking cessation is effective 90%
Up-to-date personal knowledge 66.7%
Visual examination is effective in early detection 48.6%
Tobacco 92.6%
Prior OSCC 86.8%
Family history 80.6%
Tobacco products 80%
Alcohol products 46.8%
Alcohol 66.3%
N.A.
Nazar et al.,
2019 [20]
289 >75% Tobacco 99.7%
Alcohol 99.7%
Erythroplakia and Leukoplakia 97.9% OSCC 80.6%
Positive lymph node 74.3%
Asymptomatic at early stage 31.3%
Tongue and Floor of the mouth 80.3% Need of CE 92.4%
Up-to-date personal knowledge 55%
Visual examination is effective in early detection 38%
Tobacco 62%
Alcohol 17%
Intra- and extraoral 50%
Khattab et al.,
2018 [21]
400 <75% N.A. N.A. N.A. N.A. N.A. N.A. Intra- and extraoral 37.5%
Lymph nodes 26.5%
Biopsy 27.5%
Pavão Spaulonci et al.,
2018 [22]
Senior GDPs 105;
junior GDPs 84
>75% Junior:
Tobacco 100%/Alcohol 96.4%/Family history 95.2%/Sun exposure 90.5%/HPV 84.5%
Other malignancies 83.3%/Ill-fitting prothesis 60.7%/Emotional stress 56%/Oral sex 51.2%/Presence of decay teeth 44%/Hot food and drink 40.5%/Poor oral hygiene 40.5%/Drug abuse 34.5%/Diet 31%/Spicy food 23.8%/Obesity 16.7%
Senior:
Tobacco 100%/Alcohol 100%/Family history 95.2%/Ill-fitting prothesis 93.3%/HPV 92.4%/Sun exposure 81.9%
Other malignancies 79%/Presence of decay teeth 76.2%/Hot food and drink 74.3%/Emotional stress 67.6%/Poor oral hygiene 64.8%/Oral sex 59%/Diet 47.6%/Spicy food 34.3%/Drug abuse 28.6%/Obesity 16.2%
Junior:
Leukoplakia 73.8%
Senior:
Leukoplakia 75.2%
Junior:
Ulcer 85.7%
Positive lymph node 69%
OSCC 67.9%
Junior:
Ulcer 85.7%
Positive lymph node 69.5%
OSCC 64.8%
Junior
Tongue 59.5%
Senior
Tongue 50.5%
Junior
Previous CE courses 48.8%
Undergraduate training was adequate 70.2%
Up-to-date personal knowledge 54.8%
Junior
Previous CE courses 31.4%
Undergraduate training was adequate 43.8%
Up-to-date personal knowledge 51.4%
N.A. Junior
Intra- and extraoral examination at 1st visit 78.6%
Senior
Intra- and extraoral examination at 1st visit 85.7%
Hashim et al.,
2018 [23]
298 >75% Tobacco 99%
Prior OSCC 92.3%
Alcohol 87.30%
HPV 76.6%
Sun exposure 73.2%
Elderly 60.9%
Diet 43.8%
Leukoplakia 28.4%
Candidiasis 19.1%
Actinic cheilitis 18.6%
Erythroplakia 7.7%
OLP 5.7%
Ulcer 87.6%
Positive lymph node 82.9%
White patch 79.9%
Dysphagia and limited tongue mobility 68.9%
Lump 66.9%
Red patch 63.2%
Non-healing socket 35.1%
Tongue 30.1%
Floor of the mouth 18.7%
Palate 7%
Need of CE 84.9%
Previous CE courses 48%
Visual examination is effective in early detection 31.14%
Biopsy is mandatory 9.9%
N.A. Scalpel biopsy 40%
Brush biopsy 20.4%
Toluidine blue 6%
Fluorescent imaging 5.7%
Exfoliative cytology 5%
Kogi et al.,
2018 [24]
110 Other malignancies 52.7%
Tobacco 41.8%
Elderly 21.8%
HPV 18.2%
Alcohol 13.6%
Diet 10.9%
N.A. N.A. N.A. Need of CE 86.4%
Up-to-date personal knowledge 3.6%
N.A. Intra- and extraoral examination at 1st visit 43.6%;
at recall 32.7%
Ahmed et al.,
2017 [25]
130 >75% Family history 64.6%
Comorbidities 60%
HPV 60%
Elderly 58.4%
Ill-fitting prothesis 41.6%
Tobacco 38.9%
Alcohol 38.9%
Diet 29.2%
N.A. OSCC 90%
Ulcer 83.2%
Red patch 80.5%
White patch 80.5%
Swelling 43.4%
Pain 13%
Lips 22.1%
Tongue 20.4%
Floor of the mouth 19.5%
Need of CE 95.6%
Need of referral guidelines 88.5%
Visual examination is effective in early detection 46%
Adequate knowledge 64.7%
Undergraduate training was adequate 27.4%
Up-to-date personal knowledge 26.7%
N.A. Lymph nodes 57%
Intraoral 51%
Extraoral 40.8%
Biopsy 26.5%
RX 20.4%
Mariño et al.,
2017 [26]
241 >75% Tobacco 99.4%
Betel quid chewing 98.2%
Prior OSCC 97%
Alcohol 94.6%
N.A. N.A. N.A. Visual examination is effective in early detection 95.2% N.A. Intraoral 99.7%
Oropharynx 92.3%
Extraoral 83.8%
Lymph nodes 80.7%
Kebabcıoğlu et al.,
2017 [27]
170 >75% Tobacco 98.8%
Prior OSCC 95.3%
Alcohol 91.2%
HPV 90%
Sun exposure 86.5%
Betel quid chewing 80.6%
Elderly 56.5%
Diet 52.4%
Erythroplakia and leukoplakia 64.1% OSCC 64.7%
White patch 35.9%
Red patch 26.5%
OSCC time diagnosis >60 yrs 12.9%
Tongue and floor of the mouth 37.1%
Palate and floor of mouth 11.2%
Palate 2.4%
Lack of patients’ knowledge 85.9%
Skills in neck examination 70%
Visual examination is effective in early detection 53%
N.A. N.A.
Haresaku et al.,
2016 [28]
Japanese 137;
Australian 259
>75% Japanese:
Tobacco 90%
Family history 74%
Alcohol 52%
HPV 38%
Betel quid chewing 25%
Caffeine 15%
Australian:
Betel quid chewing 98%
Tobacco 98%
Alcohol 94%
HPV 93%
Family history 75%
Caffeine 5%
N.A. N.A. N.A. Japanese
Need of CE > 90%
Visual examination is effective in early detection 76.8 %
N.A. Japanese
Intraoral 89.3%
Extraoral 35.7%
Lymph nodes 10.7%
Oropharynx 10.7%
Australian
Intraoral 98.4%
Extraoral 80.5%
Lymph nodes 50.8%
Oropharynx 23.8%
Navabi et al.,
2016 [29]
313 >75% Alcohol 26.3%
Tobacco 26.3%
N.A. OSCC 66.7%
OSCC time diagnosis >60 yrs 66.7%
Positive lymph node 48.6%
Tongue and lips 26.7% Ease for referral 92.7%
Undergraduate training was adequate 41.3%
Visual examination is effective in early detection 28%
Smoking cessation is effective 27.9%
Up-to-date personal knowledge 26.7%
Dentist skills in visual inspection 20.2%
Physician skills in visual inspection 13.4%
Tobacco 87.2%
Tobacco products 76.5%
Alcohol 76.5%
Prior OSCC 75.9%
Family history 75.2%
N.A.
Akbari et al.,
2015 [30]
GDPs 55;
specialists 18
<75% GDPs
Tobacco 92.7%
Specialists
Tobacco 88.9%
GDPs
Leukoplakia 58.2%
Specialists
Leukoplakia 66.7%
GDPs
Submandibular lymph nodes as first place of metastasis 89.1%/OSCC 87.2%/Lung as first place of distant metastasis 67.3%/Two weeks is minimum time to differentiate cancer from inflammation 63.6%/Lower lip is related with better prognosis of oral cancer 49.1%/Minor salivary tumor commonly placed in lateral posterior palate 47.3%
Specialists
Submandibular lymph nodes as first place of metastasis 100%/OSCC 100%/Lung as first place of distant metastasis 88.9%/Two weeks is minimum time to differentiate cancer from inflammation 94.4%/Lower lip is related with better prognosis of oral cancer 77.8%/Minor salivary tumor common placed in lateral posterior palate 61.1%
GDPs
Tongue 70.9%
Floor of the mouth 56.4%
Specialists
Tongue 88.9%
Floor of the mouth 88.9%
N.A. N.A. N.A.
Hassona et al.,
2015 [74]
165 >75% Tobacco 97.6%
Prior OSCC 75.2%
Alcohol 64.2%
OPMDs 60.6%
Betel quid chewing 53.9%
Comorbidities 43%
HPV 36.4 %
Sun exposure 30.3%
Elderly 26.7%
Diet 21.8%
Leukoplakia 71.5%
Erythroplakia 53.3%
Candidiasis 42.4%
OSMF 33.3%
OLP 28.5%
Actinic cheilitis 21.8%
OSCC time diagnosis >60 yrs 81.8%
Positive lymph node 71.5%
Ulcer 68.5%
White patches 62.4%
Dysphagia and limited tongue mobility 60.6%
Red patch 59.4%
Lump 58.8%
Non-healing socket 38.2%
N.A. N.A. N.A. Scalpel biopsy 84.8%
Fluorescent imaging 68.5%
Exfoliative cytology 46.7%
Brush biopsy 28.5%
Toluidine biopsy 24.2%
Allen et al.,
2015 [31]
640 <75% N.A. N.A. N.A. N.A. Visual examination is effective in early detection 98.9%
Key role of dentist 90.9%
Key role of dental hygienist 69%
Key role of physician 48.2%
N.A. Intra- and extraoral examination at 1st visit 94.5%;
at recall 85.7%
Anandani et al.,
2015 [32]
83 >75% Betel quid chewing 34.1%
Tobacco 27.7%
Alcohol 14.1%
Chronic disease 14.3%
Family history 6.1%
N.A. N.A. Labial mucosa 26.2%
Tongue 19.7%
Floor of the mouth 8.2%
Palate 6.6%
N.A. N.A. N.A.
Alaizari et al.,
2014 [33]
800 >75% Tobacco 96.4%
Shammah usage 91.9%
Betel chewing 79.2%
Prior OSCC 76.9%
Alcohol 73.3%
Ill-fitting prothesis 70.1%
Comorbidities 65.2%
HPV 66.1%
Elderly 48%
Diet 41.6%
Sun exposure 67%
Obesity 24%
N.A. OSCC 82.81% Tongue and floor of the mouth 45.7% Ease for referral 94.1%
OSCC early diagnosis improves the survival rate 87.3%
Need of CE 86%
Biopsy is mandatory 75.1%
Visual examination is effective in early detection 72.4%
Smoking cessation is effective 72%
Skills in neck examination 68.3%
Up-to-date personal knowledge 47.1%
Tobacco 79.6% Biopsy 75.1%
Intra- and extraoral 68.3%
Lymph nodes 68.3%
Mehdizadeh et al.,
2014 [34]
124 >75% N.A. N.A. OSCC 81.2% Tongue 59.6%
Floor of the mouth 58.8%
Need of CE 94%
Delay in OSCC diagnosis 74.8%
Key role of dentist 60.4%
ENT has a key role in OSCC diagnosis 37.2%
ENT has a key role in OSCC treatment 27.4%
Undergraduate training was adequate 20.4%
Clinical chart 90.4%
Recommendations in elderly 70%
Addiction 67.6%
Family history 52%
Biopsy 37%
Intra- and extraoral 84.8%
Lymph nodes 74.2%
Saleh et al.,
2014 [35]
362 <75% Tobacco 99.4%
Betel quid chewing 99.2%
Alcohol 88.9%
HPV 67.2%
N.A. Ulcer 97%
White patch 93.1%
Red patch 93.1%
Gingival bleeding 67.1%
N.A. N.A. N.A. Intra- and extraoral 84.8%
Ramaswamy et al.,
2014 [36]
450 >75% Tobacco 94% N.A. Ulcer 50%
Red patch 50%
N.A. N.A. N.A. Intra- and extraoral 90%
Razavi et al.,
2013 [37]
139 >75% Tobacco 97%
Alcohol 78%
Sun exposure 72%
Iron deficiency 62%
Ill-fitting prothesis 22%
Poor oral hygiene 17%
Diet 6%
Erythroplakia and leukoplakia 50% Positive lymph node 67%
Asymptomatic at early stage 45%
Red patch 33%
OSCC time diagnosis >60 yrs 33%
Tongue and floor of the mouth 51% Key role of dentist 71%
Undergraduate training was adequate 36%
Adequate post graduate training 16%
N.A. Intra- and extraoral 11%
Lymph nodes 23%
Biopsy 6%
Pentenero et al.,
2013 [38]
450 >75% Prior OSCC 51.1% Leukoplakia 79.6%
Erythroplakia 57.1%
N.A. Tongue 74.4%
Floor of the mouth 72.9%
Palate 18.7%
Up-to-date personal knowledge 83.1%
Need of CE 31.8%
N.A. Intraoral 84%
Rocha–Boulevas et al.,
2012 [39]
93 <75% Prior OSCC 78.4%
Tobacco 78.4%
Alcohol 56.9%
Elderly 44.1%
Diet 17.2%
Erythroplakia and leukoplakia 51.61% OSCC 52.6%
Red patch 51.6%
OSCC time diagnosis >60 yrs 47.3%
Tongue and floor of the mouth 18.2% Smoking cessation is effective 74.19%
Alcohol cessation is effective 67.74%
Skills in neck examination 66.67%
Lack of patients’ knowledge 47.3%
Visual examination is effective in early detection 39.78%
Alcohol products 88.1%
Alcohol 82.2%
Prior OSCC 59.14%
Tobacco products 50.54%
Tobacco 49.4%
Family history 22.58%
N.A.
Joseph et al.,
2012 [40]
153 >75% Tobacco 100%
Prior OSCC 97.3%
Betel quid chewing 89%
Alcohol 88.8%
Sun exposure 82.7%
HPV 71.2%
Elderly 60.3%
Diet 52.7%
Erythroplakia and leukoplakia 93.2% Asymptomatic at early stage 90.7%
OSCC diagnosis (III/IV stage) 75%
Positive lymph node 70.1%
Visual inspection is the most effective screening method 50.4%
Tongue and floor of the mouth 85% OSCCC early diagnosis improves survival rate 98%
Ease for referral 89.5%
Skills in neck examination 72.5%
Up-to-date personal knowledge 51.6%
Smoking cessation is effective 38.6%
Visual examination is effective in early detection 38.6%
Previous CE courses 30.1%
Alcohol cessation is effective 20.3%
Tobacco 65%
Alcohol 21.6%
Intraoral 86.3%
Biopsy 62.9%
Vijay Kumar et al.,
2012 [41]
240 <75% Alcohol 99%
Tobacco 78.3%
Ill-fitting prothesis 53.7%
Sun exposure 45%
Elderly 31.2%
Blistering 3% OSCC 96%
White patch 82%
OSCC time diagnosis >60 yrs 59%
Red erosion 9%
Buccal mucosa 83% Ease for referral 98.7%
Annual visual inspection for patients over 40 is mandatory 67.9%
Visual examination is effective in early detection 68.3%
Skills in neck examination 50.4%
Up-to-date personal knowledge 39.1%
Tobacco 68%
Alcohol 68%
Intra- and extraoral 37%
Lymph nodes 37%
Biopsy 24%
Seoane et al.,
2012 [42]
791 >75% N.A. N.A. N.A. N.A. N.A. N.A. Intraoral 90.3%
Biopsy 28.7%
Maybury et al.,
2012 [43]
463 >75% Tobacco 98%
Prior OSCC 97%
Alcohol 95%
HPV 88%
Elderly 71%
Sun exposure 64%
Diet 35%
Erythroplakia and leukoplakia 42% OSCC 83%
Asymptomatic at early stage 80%
Red patch 81%
Positive lymph node 77%
Tongue high-risk area 72%
OSCC time diagnosis >60 yrs 30%
OSCC diagnosis (III/IV stage) 28%
Tongue 59% Up-to-date personal knowledge 81%
Visual examination is effective in early detection 94%
Skills in neck examination 79%
Smoking cessation is effective 32%
Alcohol cessation is effective 15%
N.A. N.A.
Alami et al.,
2012 [75]
55 >75% Tobacco 92%
Alcohol 83%
Sun exposure 67%
Elderly 62%
HPV 47%
Diet 33%
Erythroplakia 47.3%
Leukoplakia 40%
OLP 14.5%
Nicotinic stomatitis 14.5%
OSCC 98.2%
Red or white patch 94.5%
Asymptomatic at early stage 90.9%
Positive lymph node 80%
OSCC diagnosis (III/IV stage) 75.9%
Floor of the mouth 45.5%
Tongue 29.1%
Lips 29.1%
N.A. N.A. N.A.
Borhan–Mojabi et al.,
2011 [76]
86 >75% Tobacco 78.3%
Alcohol 34.9%
N.A. N.A. Tongue 80.9%
Lips 28.3%
Floor of the mouth 25.7%
Lack of patients’ knowledge 40.7% N.A. Intraoral 79.15%
Hertrampf et al.,
2011 [44]
306 >75% Tobacco 99%
Prior OSCC 95.1%
Alcohol 92.8%
Sun exposure 68%
Elderly 60.5%
HPV 57.8%
Diet 19%
Erythroplakia and leukoplakia 67.6% OSCC 86.9%
Need of three negative follow-ups 84.6%
OSCC diagnosis (III/IV stage) 81%
Tongue high-risk area 67.6%
Red patch 59.5%
OSCC time diagnosis >60 yrs 47.7%
Asymptomatic in the early stages 47.1%
Floor of the mouth 76.1%
Tongue 70.3%
OSCC early diagnosis improves the survival rate 98.4% N.A. Intraoral 84.3%
Decuseara et al.,
2011 [45]
254 >75% Alcohol 98%
Tobacco 98%
Prior OSCC 83%
Sun exposure 79%
HPV 60%
Elderly 53%
Radiotherapy 39%
Spicy food 33%
Diet 28%
Hot food and drink 9%
Leukoplakia 87%
Erythroplakia 82%
Erythroplakia and leukoplakia 80%
Asymptomatic at early stage 95%
Tongue high-risk area 87%
OSCC diagnosis (III/IV stage) 86%
OSCC time diagnosis >60 yrs 42%
Floor of the mouth 86%
Tongue 70%
OSCC early diagnosis improves the survival rate 95%
Visual examination is effective in early detection 73%
Skills in neck examination 55%
Smoking cessation is effective 33%
Alcohol cessation is effective 13%
Tobacco 75%
Prior OSCC 70%
Alcohol 45%
Intra- and extraoral 97%
Hertrampf et al.,
2010 [46]
306 >75% Tobacco 99%
Alcohol 93%
Prior OSCC 95%
Sun exposure 68%
Elderly 61%
HPV infection 58%
Diet 19%
Erythroplakia and leukoplakia 67% OSCC 87%
Need of three negative follow-ups 85%
OSCC diagnosis (III/IV stage) 81%
Positive lymph node 71%
Tongue high-risk area 68%
Red patch 60%
Asymptomatic at early stage 47%
OSCC time diagnosis >60 yrs 46%
Floor of the mouth 76%
Tongue 70%
OSCC early diagnosis improves the survival rate 90% N.A. Intraoral 70%
Reed et al.,
2010 [77]
288 <75% Tobacco 90%
Betel quid chewing 88%
Alcohol 45%
HPV 26%
Diet 6%
N.A. N.A. N.A. N.A. Tobacco 70% Intraoral 81%
Klosa et al.,
2010 [47]
306 >75% N.A. N.A. N.A. N.A. Annual visual inspection for patients over 40 is mandatory 84%
Dentists are qualified to perform OSCC examination 71%
Visual examination is effective in early detection 63%
Tobacco 65%
Prior OSCC 65%
Tobacco products 45
Family history 40%
Alcohol 35%
Alcohol products 25%
Intra- and extraoral 28%
López–Jornet et al.,
2010 [48]
340 >75% Tobacco 100%
Alcohol 96.4%
Prior OSCC 95.5%
Ill-fitting prothesis 95.5%
Family history 87.1%
Poor oral hygiene 77.6%
Elderly 69.4%
Diet 52.6%
Spicy foods 40.8%
Obesity 14.4%
Erythroplakia and leukoplakia 95% Tongue high-risk area 96.8%
Asymptomatic at early stage 95.6%
OSCC diagnosis (III/IV stage) 94.7%
OSCC 90.6%
Positive lymph node 86.2%
Red/white patch 89.7%
OSCC time diagnosis >60 yrs 72.6%
Tongue and floor of the mouth 89.1% Dentists are qualified to perform OSCC examination 94.7%
Ease for referral 90.9%
Annual visual inspection for patients over 40 is mandatory 89.7%
Skills in neck examination 52.6%
Up-to-date personal knowledge 49.7%
Physicians are qualified to perform OC examination 41.8%
Smoking cessation is effective 41.5%
Alcohol cessation is effective 27.6%
Dental hygienists are qualified to perform OC examination 13.8%
N.A. N.A.
Seoane–Leston et al.,
2010 [49]
440 >75% Diet 18.6% Leukoplakia 78%
OLP 72%
N.A. N.A. N.A. N.A. N.A.
Applebaum et al.,
2009 [78]
274 >75% N.A. Erythroplakia and leukoplakia 34% N.A. N.A. Dentists are qualified to perform OSCC examination 96%
Visual examination is effective in early detection 85%
Lack of patients’ knowledge 79.5%
Skills in neck examination 66.67%
Up-to-date personal knowledge 50%
Physicians are qualified to perform OC examination 45%
Smoking cessation is effective 24%
Alcohol cessation is effective 12%
Tobacco 85.5%
Prior OSCC 85%
Family history 56%
Alcohol 51%
Tobacco products 34%
Alcohol products 34%
N.A.
Mahalaha et al.,
2009 [50]
34 >75% N.A. N.A. OSCC 79.4%
Red patch 76.5%
Tongue high-risk area 70%
Asymptomatic at early stage 67.6%
Positive lymph node 56.3%
OSCC time diagnosis >60 yrs 30.3%
Persistent ulcer 26.5%
Need of three negative follow-ups 6.2%
Bleeding area 2.9%
Pain 2.9%
Swelling 2.9%
Tongue and floor of the mouth 62% Annual visual inspection for patients over 40 is mandatory 100%
Ease for referral 96.9%
Dentists are qualified to perform OSCC examination 96.9%
Visual examination is effective in early detection 84.4%
Skills in neck examination 71.9%
Up-to-date personal knowledge 70%
Undergraduate training was adequate 65.7%
N.A. Intra- and extraoral examination at 1st visit 83%
at recall 73%
Lymph nodes 57%
Colella et al.,
2007 [12]
457 >75% Tobacco 94.1%
Prior OSCC 89.5%
Alcohol 79.2%
Elderly 47.9%
Diet 25.8%
Erythroplakia and leukoplakia 53.8% N.A. Tongue and floor of the mouth 32% Smoking cessation is effective 80.9%
Alcohol cessation is effective 76.5%
Visual examination 53.8%
Skills in neck examination 66.8%
Lack of patients’ knowledge 39.6%
Tobacco 81.8%
Prior OSCC 78.6%
Alcohol 71.9%
Alcohol products 59.9%
Tobacco products 55.6%
Family history 47.9%
Intra- and extraoral examination at 1st visit 52.3%
LeHew et al.,
2007 [51]
518 >75% Elderly 47.9%
Family history 31.3%
Alcohol 8.1%
Tobacco 1.2%
Leukoplakia 83.6%
Erythroplakia 72%
OSCC 74.7%
Positive lymph node 64.3%
White patch 53.9%
OSCC time diagnosis >60 yrs 20.1%
Red patch 31.5%
Tongue 77.4%
Floor of the mouth 72%
Buccal mucosa 26.3%
Need of CE 74.5% Tobacco 76.1%
Tobacco products 63.5%
Alcohol 47.4%
Alcohol products 28.8%
Intra- and extraoral 92.3%
Lymph nodes 71.5%
Gajendra et al.,
2006 [52]
499 >75% Tobacco 90%
Alcohol 80%
Sun exposure 60%
Elderly 55%
Betel quid chewing 52%
Diet 25%
Gutka consumption 16%
N.A. OSCC time diagnosis >60 yrs 33% N.A. Visual examination is effective in early detection 82%
Previous CE courses 80%
Skills in neck examination 75%
Up-to-date personal knowledge 72%
Lack of patient’s knowledge 65%
Dentist skills in visual inspection 53%
Dental hygienist skills in visual inspection 38%
Smoking cessation is effective 20%
Alcohol cessation is effective 15%
Prior OSCC 79%
Tobacco 70%
Tobacco products 58%
Family history 57%
Alcohol 45%
Alcohol products 31%
Intra- and extraoral 85%
Kujan et al.,
2006 [53]
143 <75% N.A. N.A. N.A. N.A. Undergraduate training was adequate 51% Prior OSCC 74.2%
Tobacco 67.1%
Tobacco products 55.2%
Alcohol 41.3%
Betel quid chewing 39.8%
Alcohol products 32.8%
Family history 21%
Diet 25.3%
Sun exposure 10.5%
Intra- and extraoral 92%
Seoane et al.,
2006 [54]
32 <75% N.A. N.A. N.A. N.A. N.A. N.A. Scalpel biopsy 96.9%
Intraoral examination 87.5%
Toluidine blue 9.4%
Patton et al.,
2005 [55]
584 >75% Tobacco 100%
Prior OSCC 99%
Alcohol 95%
Elderly 76%
Sun exposure 74%
HPV 60%
Diet 39%
Erythroplakia and leukoplakia 73% Need of three negative follow-ups 98%
OSCC 84%
Red patch 82%
Asymptomatic at early stage 79%
Positive lymph node 70%
Tongue high-risk area 77%
OSCC diagnosis (III/IV stage) 53%
OSCC time diagnosis >60 yrs 29%
Floor of the mouth 79%
Tongue 78%
OSCC early diagnosis improves survival rate 99% N.A. Intraoral 83%
Cruz et al.,
2005 [56]
904 <75% N.A. N.A. N.A. N.A. N.A. Tobacco 77%
Tobacco products 66%
Alcohol 54.5%
Alcohol products 36%
Intra- and extraoral examination at 1st visit 86%;
at recall 80%
Alonge et al.,
2004 [57]
158 >75% Tobacco 98%
Alcohol 98%
Prior OSCC 93%
Hot food and drink 75%
Elderly 74%
Spicy food 73%
Family history of cancer 70%
Obesity 63%
Poor oral hygiene 42%
Diet 37%
Ill-fitting prothesis 33%
Erythroplakia and leukoplakia 31% OSCC 84%
Positive lymph node 79%
Red patch 76%
Asymptomatic at early stage 76%
Tongue high-risk area 68%
Lip cancer related to the sun 76%
OSCC diagnosis (III/IV stage) 53%
OSCC time diagnosis >60 yrs 39%
Tongue and floor of the mouth 51% Need of CE 81%
Undergraduate training was adequate 75%
Previous CE courses 64%
N.A. Intra- and extraoral examination at 1st visit 67%
Recall visit 54%
Lymph nodes 36%
Macpherson et al.,
2003 [79]
225 >75% Tobacco 94%
Alcohol 90%
HPV 35%
Fungal infections 33%
Leukoplakia 79%
Erythroplakia 67%
N.A. N.A. N.A. N.A. N.A.
Clovis et al.,
2002 [58]
British Columbia
401
Nova Scotia
269
<75% Tobacco 99.4%
Prior OSCC 96.6%
Alcohol 90.4%
Elderly 78.7%
Sun exposure 70.1%
HPV 53.1%
Diet 34%
Erythroplakia and leukoplakia 76% Need of three negative follow-ups 92.4%
OSCC 83.4%
Asymptomatic at early stage 78.4%
Red patch 77.3%
Tongue high-risk area 75.7%
Positive lymph node 68.1%
OSCC diagnosis (III/IV stage) 54.4%
OSCC time diagnosis >60 yrs 45.7%
Tongue 78.7%
Floor of the mouth 66.6%
OSCC early diagnosis improves the survival rate 97.8%
Up-to-date personal knowledge 56.8%
N.A. Intraoral 80.6%
Clovis et al.,
2002 [59]
British Columbia
401;
Nova Scotia
269
<75% N.A. N.A. N.A. N.A. British Columbia
Visual examination is effective in early detection 83.1%
Skills in neck examination 74.8%
Undergraduate training was adequate 68.5%
Smoking cessation is effective 11.4%
Alcohol cessation is effective 5.3%
Nova Scotia
Visual examination is effective in early detection 79.5%
Skills in neck examination 69.4%
Undergraduate training was adequate 68.3%
Smoking cessation is effective 7.8%
Alcohol cessation is effective 5.3%
British Columbia
Prior OSCC 93.1%
Tobacco 76.8%
Family history 69.6%
Tobacco products 62.4%
Alcohol 35.65
Alcohol products 17.7%
Nova Scotia
Tobacco 82%
Prior OSCC 87.4%
Family history 64.5%
Tobacco products 60.1%
Alcohol 39.3%
Alcohol products 23.4%
British Columbia
Intra- and extraoral examination at 1st visit 71.2%;
at recall 54.5%
Lymph nodes 27.4%
Nova Scotia
Intra- and extraoral examination at 1st visit 69.9%;
at recall 45.7%
Lymph nodes 26.2%
Canto et al.,
2001 [60]
508 >75% Tobacco 100%
Prior OSCC 97%
Alcohol 95%
Elderly 68%
Sun exposure 62%
Diet 30%
Erythroplakia and leukoplakia 32% OSCC 82%
Red patch 81%
Asymptomatic at early stage 76%
Positive lymph node 76%
Tongue high-risk area 71%
OSCC diagnosis (III/IV stage) 50%
OSCC time diagnosis >60 yrs 35%
Tongue and floor of the mouth 62% N.A. N.A. N.A.
Greenwood et al.,
2001 [80]
143 >75% Tobacco 90.7%
Betel quid chewing 60.8%
Alcohol 45.7%
N.A. N.A. N.A. N.A. N.A. Intra- and extraoral 68.2%
Yellowitz et al.,
2000 [61]
3200 >75% Tobacco 99.7%
Alcohol 92.7%
Prior OSCC 96.4%
Elderly 70%
Sun exposure 64%
Diet 33%
Erythroplakia and leukoplakia 37% OSCC 83%
Red patch 80%
Asymptomatic at early stage 76%
Tongue high-risk area 71%
Positive lymph node 69%
OC diagnosis (III/IV stage) 51%
OSCC time diagnosis >60 yrs 33%
Tongue and floor of the mouth 54% Need of CE 84%
Up-to-date personal knowledge 68%
N.A. Intraoral 81%
Horowitz et al.,
2000 [62]
3200 >75% N.A. N.A. N.A. N.A. Visual examination is effective in early detection 88%
Undergraduate training was adequate 78%
Skills in neck examination 72%
Smoking cessation is effective 28%
Alcohol cessation is effective 11%
Prior OSCC 91%
Tobacco 83.5%
Tobacco products 72% Family history 65%
Alcohol 55%
Alcohol products 33%
Intra- and extraoral examination at 1st visit 81%
at recall 68%
Lymph nodes 30%
Horowitz et al.,
2000 [63]
243 >75% N.A. N.A. N.A. N.A. Visual examination is effective in early detection 92.6%
Skills in neck examination 76.5%
Undergraduate training was adequate 74%
Smoking cessation is effective 25%
Alcohol cessation is effective 11.5%
Prior OSCC 92.1%
Tobacco 84.2%
Tobacco products 70.2%
Family history 69.2%
Alcohol 60.9%
Alcohol products 35.8%
Intra- and extraoral examination at 1st visit 83.7%
at recall 78.3%
Lymph nodes 34.3%
Warnakulasuriya et al.,
1999 [64]
2519 <75% N.A. N.A. N.A. N.A. N.A. Tobacco 50.2%
Alcohol 19.3%
Intra- and extraoral 84%
Biopsy 21%
Yellowitz et al.,
1998 [65]
243 <75% Tobacco 99.6%
Sun exposure 97.9%
Prior OSCC 95.7%
Alcohol 90.8%
Elderly 68.9%
Ill-fitting prothesis 64.6%
Poor oral hygiene 47.2%
Diet 33.6%
Erythroplakia and leukoplakia 36% OSCC 83%
OSCC time diagnosis >60 yrs 30%
Asymptomatic at early stage 27%
Tongue 74%
Floor of the mouth 68%
Tongue and floor of the mouth 46%
Buccal mucosa 30%
Palate 14%
Annual visual inspection for patients over 40 is mandatory 97.6%
OSCC early diagnosis improves survival rate 96.4%
Visual examination is effective in early detection 88%
Up-to-date personal knowledge 83.7%
Skills in neck examination 77.2%
Lack of patients’ knowledge 67%
Tobacco 78.5%
Tobacco products 65%
Alcohol 40.5%
Alcohol products 20%
Intra- and extraoral examination at 1st visit 33%
Lymph nodes 33%
Yellowitz et al.,
1995 [81]
57 >75% N.A. N.A. OSCC time diagnosis >60 yrs 89%
Pain 37.5%
N.A. Annual visual inspection for patients over 40 is mandatory 92.5%
Ease to referral 88.2%
Up-to-date personal knowledge 73.1%
OSCC early diagnosis improves the survival rate 65.5%
N.A. N.A.

Abbreviations: OSCC: Oral squamous cell carcinoma; GDPs: General dental practitioners; OLP: Oral lichen planus; OSMF: Oral sub-mucous fibrosis; Max-fac surgeon: Oral and maxillofacial surgeon; ENT: Otolaryngologist; OM: Oral medicine; CE: Continuing education; RX: Radio diagnostics.