Table:
Author group	Year of publication	Dental status	Rehabilitation procedures	Remarks
Frydrych et al. (n = 82) [9]	2011	No information	No information	Average (median) date of last dental visit: 66.76 months (18 months) before radiotherapy
Guggenheimer et al. (n = 947) [10]	1994	Edentulous: 59%	No information
Partially edentulous: 9%
Poor dentition with no replacement: 14%
Intact dentition: 18%
Maier et al. (n = 100) [11]	1993	Tumour vs. control patients: Tartar > 3 mm: 40.91 vs. 21.98%	No information	Tumour vs. control patients
Never tooth brushing 44.9 vs. 23.5%
Decayed teeth >50% : 27.2 vs. 3.9%	Dental visit more than once a year: 6% vs. 43.5%
Lockhart et al. (n = 131) [12]	1994	Alveolar bone loss: 66%	Needing dental care: 97%	Noncompliant with routine dental care: 76%
Clinical caries: 71%	Did not seek the indicated treatment: 81%	Noncompliant with routine oral hygiene: 65%
Failing restorations: 91%
Jham et al. (n = 207) [7]	2008	Periodontal disease: 41%	No information
Residual root: 21.2%
Caries 12%
Unerupted tooth: 5.8%

Parse the following content of the illustration in markdown code: | Author group | Year of publication | Dental status | Rehabilitation procedures | Remarks | 
 | --- | --- | --- | --- | --- | 
 | Frydrych et al. (n = 82) [9] | 2011 | No information | No information | Average (median) date of last dental visit: 66.76 months (18 months) before radiotherapy | 
 | <ROWSPAN=4> Guggenheimer et al. (n = 947) [10] | <ROWSPAN=4> 1994 | Edentulous: 59% | <ROWSPAN=4> No information | <ROWSPAN=4>  | 
 | Partially edentulous: 9% | 
 | Poor

dentition with no replacement: 14% | 
 | Intact dentition: 18% | 
 | <ROWSPAN=3> Maier et al. (n = 100) [11] | <ROWSPAN=3> 1993 | <ROWSPAN=2> Tumour vs. control patients: Tartar > 3 mm: 40.91 vs. 21.98% | <ROWSPAN=3> No information | Tumour vs. control patients | 
 | Never tooth brushing 44.9 vs. 23.5% | 
 | Decayed teeth >50% : 27.2 vs. 3.9% | Dental visit more than once a year: 6% vs. 43.5% | 
 | <ROWSPAN=3> Lockhart et al. (n = 131) [12] | <ROWSPAN=3> 1994 | Alveolar bone loss: 66% | Needing dental care: 97% | Noncompliant with routine dental care: 76% | 
 | Clinical caries: 71% | <ROWSPAN=2> Did not seek the indicated treatment: 81% | <ROWSPAN=2> Noncompliant with routine oral hygiene: 65% | 
 | Failing restorations: 91% | 
 | <ROWSPAN=3> Jham et al. (n = 207) [7] | <ROWSPAN=3> 2008 | Periodontal disease: 41% | <ROWSPAN=3> No information | <ROWSPAN=3>  | 
 | Residual root: 21.2% | 
 | Caries 12% | 
 |  |  | Unerupted tooth: 5.8% |  |  |