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Summary of Significant Accounting Policies (Details Textual) (USD $)
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Summary of Significant Accounting Policies (Textual) [Abstract]    
Warranty expense $ 87,544 $ 63,445
Non-Warranty repair income 107,868 100,017
Long-lived assets for impairment 0 0
Advertising expenses 51,412 83,764
Weighted-average fair value of the individual options granted $ 0.95 $ 0.33
Payment of materials in advance 2,827,000 3,407,000
Rate of shareholder of the company 5.00%  
Company purchased from supplier 1,966,077 2,006,885
Owed by company 808,908 1,207,280
Write-off of Investment $ 76,319  
Options [Member]
    
Summary Of Significant Accounting Policies [Line Items]    
Outstanding options and warrants 1,523,740 1,599,281
CompuDent Instruments [Member]
    
Summary Of Significant Accounting Policies [Line Items]    
Number of instruments on purchase agreement 5,000  
STA Instruments [Member]
    
Summary Of Significant Accounting Policies [Line Items]    
Number of instruments on purchase agreement 12,000  
Corporate Joint Venture [Member]
    
Summary Of Significant Accounting Policies [Line Items]    
Investment on the equity 50.00%  
Maximum [Member]
    
Summary Of Significant Accounting Policies [Line Items]    
Estimated useful lives Seven Years  
Impairment periodically 20.00%  
Minimum [Member]
    
Summary Of Significant Accounting Policies [Line Items]    
Estimated useful lives Five years