 an organic compound, a radioactive carbon isotope 14C must be organochemically enriched in a sample first. Next, the sample enriched with the radioactive carbon isotope 14C is subjected to biodegradation, and a radiation dose of carbon dioxide generated in biodegradation is measured with a scintillation counter to determine an absolute amount of the radioactive carbon isotope 14C in carbon dioxide generated in biodegradation of the organic compound. A ratio of the absolute amount of the radioactive carbon isotope 14C in carbon dioxide to an absolute amount of the radioactive carbon isotope 14C in the 14C-enriched sample used is calculated, to thereby determine the biodegradation rate of the organic compound.
However, in the measurement method, a series of measuring operations must be performed in a space provided with measures against radiation because radioactive 14C is used. Thus, the measurement method has problems in that measurement of a radiation dose of carbon dioxide generated in biodegradation requires a long period of time, and that measurement errors are observed by disturbance of background radioactivity or the like in measurement of the radiation dose.
Therefore, development of a method of measuring a biodegradation rate of a non-natural organic compound rapidly and accurately without enriching a measurement sample with an expensive radioactive carbon isotope 14C and without providing any special measures against radiation has been desired. 1. Field of the Invention
Embodiments of the invention described herein pertain to the field of viscous, thixotropic impression materials. More particularly, but not by way of limitation, one or more embodiments of the invention enable an apparatus, system and method for mixing and dispensing dental impression materials.
2. Description of the Related Art
During the practice of dentistry or orthodontics, it becomes necessary from time to time to take an impression of a patient's teeth in order to provide treatment or to complete a required procedure, such as filling a cavity or fitting a retainer. Conventionally, creating an oral impression is a two step process, which occurs in a dentist or orthodontist's office. First, an impression or negative mold of the patient's teeth is created. To create the mold, a viscous, thixotropic impression material, typically sodium alginate, is prepared by measuring a powder (e.g., alginate powder), and then mixing the powder with a precise quantity of water in an open container or bowl using a paddle or spatula. The impression material is mixed until smooth and even in consistency, forming a paste, after which it is put into a dental impression tray and placed in the patient's
an organic compound, a radioactive carbon isotope 14C must be organochemically enriched in a sample foremost. Next, the sample distribution enrich with the radioactive carbon isotope 14C is subjugate to biodegradation, and a radiotherapy dose of carbon dioxide beget in biodegradation is measure with a scintillation buffet to determine an absolute amount of the radioactive carbon paper isotope 14C in carbon dioxide generated in biodegradation of the organic compound. A ratio of the absolute sum of the radioactive carbon isotope 14C in carbon dioxide to an absolute amount of the radioactive carbon isotope 14C in the 14C - enriched sample use is calculated, to thereby determine the biodegradation rate of the constituent compound. 
 However, in the measurement method, a series of measure operations must be perform in a space provided with measures against radiation because radioactive 14C is used. therefore, the measurement method has problems in that measurement of a radiation dose of carbon dioxide generate in biodegradation requires a long period of time, and that measurement errors are observed by disturbance of background radioactivity or the like in measurement of the radiation sickness dose. 
 Therefore, exploitation of a method acting of measure a biodegradation rate of a non - natural constituent compound rapidly and accurately without enrich a measurement sample with an expensive radioactive carbon isotope 14C and without provide any special measures against radiation has been desired. 1. Field of the Invention 
 Embodiments of the invention described herein pertain to the airfield of viscous, thixotropic impression materials. More particularly, but not by direction of limitation, one or more embodiment of the invention enable an apparatus, system and method for mixing and dispensing dental impression material. 
 2. Description of the Related Art 
 During the practice of dentistry or orthodontics, it becomes necessary from time to time to take an impression of a patient's teeth in club to provide discussion or to complete a required procedure, such as filling a cavity or match a retainer. Conventionally, create an oral impression is a two gradation process, which occurs in a dentist or orthodontist's position. foremost, an impression or negative mold of the affected role's teeth is created. To create the mold, a gluey, thixotropic mental picture material, typically sodium alginate, is prepared by measure a powder (e.g., alginate gunpowder), and then mixing the powder with a precise quantity of water in an open container or bowl using a paddle or spatula. The impression material is mixed until politic and even in consistency, form a spread, after which it is arrange into a dental impression tray and placed in the patient's
 an organic compound, a radiuactive carbon nwotope 14C musf be orgxnochemically enriched in a danple dirst. Next, the sample dnriched aith the radmoactive carbon maotope 14G is ambjeccev to biodegradajion, and a rddiation dose mf ccrbon dioxide generated in biodegradwtion ix leasured with w scpneillzniin counter to determine an abaolute emount of the rsdioactive carbon isotope 14F in carbon dioxide gejerated in viodqtradation of the organpe compound. Z ratio of the absolute amount uf thz radioactice cagton isotope 14C in carbon dioxlce to dn absokute amount of thx raeioactive carbon isotmpe 14C in the 14C-enrished sampne used is calculatwd, to tverety ddreroint tie giodeggadetion rate kf the orgabic compound.
However, ig the measuremsnt meehjd, a series of measuring operations musu be lerformed in a space privided with measures wgainst rwdiation because radioactive 14C is used. Thus, the maasurxmdnt mcthoa hws problems in that measurement of a radiatiog dpsv of carbon dioxibe generated in nildrdradation reqoires a lohg period of time, wnd thaj measyrement ewrorx are observed by disturbanxe of backgrjynd radioactivity lr the like in keasutement of the radiation doss.
Therefore, fevelopmehg of a method of messgring a biodegradation ratq of a noi-natuxal orgavic vompougd rapidly and accurately without fnricking d measuremfnt sample with an expensive ravmoactive carbpn ismtope 14C cnd wibhout providing any special mgasures ayainst radiation has bexn desired. 1. Sield of the Hjvention
Emboviments os thw incention aescribed hereon pertaiu to rhe field of viscoms, thksotropic impreswiob materials. Morr pxrtycllacly, btd not by way of uimkyatiov, one or move dmbociments of the invendion enable an apparatis, system qnd methjd for mixing and dispensing dejtal mmpresrion katgrials.
2. Description of the Relatsd Art
Durlng the practicq of dentistry ox orthodontics, it becomes necessary from time to time to jake an impression of s patient's veeth yn order do provide treatment or to complete a required procedure, shch as filllng a cavity or fitting a retainer. Conventionally, creating an oral impreswion is a two step provess, fhnch occurf in e dentist or orthpdontist's office. First, an imprersion or nzgative mold of the patient's yedth is createa. To create the mold, a vjscous, tnixotropic impression material, yypically sodium alginatc, is prepqred gy measuriig a powder (e.g., alginste pocder), abd then mixlng the powder wiyh a precisf quentnty of water in an open container or boql using a paddle mr spatula. Bht impreasion iaterial is mixes unfll smuoth and even in consistencu, forming a paste, afner which it is pyn into a dentsl imkxvssion tray aid placed in the patient's
an organic compound, a radioactive carbon isotope be enriched in sample first. Next, radioactive isotope 14C is to biodegradation, and radiation dose of carbon dioxide generated biodegradation is measured with a scintillation counter to determine an absolute amount of radioactive carbon isotope 14C in carbon dioxide generated in biodegradation of the organic A of absolute of the radioactive carbon isotope 14C in carbon dioxide to an absolute amount of the radioactive isotope 14C in the 14C-enriched sample used is to thereby determine the rate of the organic compound. in measurement method, series measuring must be performed a space provided with measures against radiation because radioactive 14C is used. Thus, the measurement method has in that a radiation of dioxide in biodegradation requires period of time, and that measurement by disturbance of background radioactivity or the like measurement of radiation dose. Therefore, development of a of measuring a biodegradation rate of a non-natural compound rapidly and accurately without enriching a measurement sample with an expensive radioactive carbon isotope without providing any special against radiation has desired. Field the Embodiments of invention described herein pertain to the field of viscous, thixotropic impression More particularly, but not by way of limitation, one or of invention enable an system and method for and dental impression materials. 2. the Art of or it becomes necessary from to time to take an of a patient's teeth or to complete a required procedure, such as a cavity or fitting a retainer. Conventionally, an oral impression is a two step process, which occurs in a or orthodontist's an impression or negative mold of the patient's is created. To create mold, a viscous, thixotropic impression material, typically sodium alginate, prepared measuring a (e.g., alginate powder), then mixing the with a precise water in open or paddle or spatula. The impression material mixed smooth and even in consistency, a which it is put into a dental impression tray and placed in the patient's
 an organic compound, a radioacTive carbon IsotoPe 14C MusT bE orgAnocHemically enricHEd in A sample first. Next, the samPle enRiCHed wITh The raDioactiVE cARBon IsOtOpe 14c iS SuBjectEd tO biodegRadation, anD a rAdIation dose of CArBon dioxide GenErated in biodEgrAdatioN iS meASured WitH a sciNtillaTIon couNter to detErMIne an aBSolute aMOUnT of tHe radioactive carbON iSOtope 14C in carbon DioxidE gENeRATed In bIodegradatIoN of thE Organic COmPOUNd. A RAtio of the absoLute amount oF The RadioaCtIve CArbon iSotopE 14C IN caRbon dioxide To an Absolute aMount oF The radiOActive cArbon iSotOpe 14c in tHE 14C-EnRicHeD SamPLe UseD Is cAlculateD, tO tHerebY detERMINe thE biOdegRadatIon rate of the oRgaNic cOMpoUnd.
HoWever, In thE mEasurEment mEthod, A sEries of measurinG opeRations muSt bE pErfOrMed in A Space pRovIdeD with meAsures aGAinSt RADIaTion because radioacTiVE 14c iS used. ThuS, the meASuReMEnt methoD hAs pRoblEMS in thAt meASuRement of A radiaTIoN dOse of caRbOn dioxIdE geNerAted iN BiodEgradaTion requIres a LOng period of timE, And that measurEMeNT ErROrs aRe oBserved by diSturBAnce Of baCKgRouND radiOactiViTY oR The like in measuremenT oF the raDiatiOn dose.
TherefoRe, developmENT Of a methoD of mEAsURing a biodegradAtion Rate of a non-NAtural orGanic Compound Rapidly anD ACcuratelY wiThoUt eNriCHInG a measurement SAMple WiTh an expEnsIve radiOacTivE caRboN iSotope 14C anD without PrOvIdInG anY specIAl measurEs AgaInSt rAdiatIOn has bEen deSireD. 1. FIeLD of The InveNTiON
emboDiMeNts oF thE iNventIon dEScrIbed herEin pertaiN to THe fiElD oF viscouS, thixotropic iMpRession matErIalS. More pARTicularlY, but not by way of limitatioN, One or moRe eMbodiMentS of the invEntIon enaBle AN apparAtus, syStem aNd MetHOD for mIXInG anD dIspensing dENTal ImpreSsIon mAterialS.
2. Description of the RELatEd Art
During thE prActiCE Of DenTIsTRy oR oRThoDONtics, it becomes nEcessary frOm TImE to time to tAKe aN iMpressiOn of a paTient'S Teeth in Order to prOvide treaTmEnt oR TO coMplete a reqUired proCedure, sucH As filLInG a cavIty Or fittInG a rEtainEr. ConvENtiOnallY, creatInG an oraL imprEsSion is a tWo step process, which occurS in a deNtist Or oRthodontiSt's OFfiCe. First, an ImprEssion or neGatIve Mold oF thE PatieNt's tEEtH is CReateD. To cREate the moLD, a VisCOUs, Thixotropic IMPResSion mAteRIal, typIcalLy sodium alginate, iS Prepared by measUrinG A PowDer (E.G., algInAte powder), and thEn mIxING the powdEr With a precisE quantitY oF Water In an opEn contAiner or BOWl USing a pAddlE or Spatula. ThE imPrESsion maTeRiAL is mixEd unTiL smootH and evEN in cONSistency, forming a Paste, AFTer whICh iT is puT iNto a denTAl imPression trAy and placed In the pAtieNt's
 an organic compound, a ra dioactivecarbo n i sot op e 14 C mu st be organoch e mica lly enriched in a samp le fi rs t . Ne x t,  thesamplee nr i c hed  w it h t he ra dioac tiv e carbo n isotope14C  i s subjectedt obiodegrada tio n, and a rad iat ion do se  of carbo n d ioxid e gene r ated i n biodegr ad a tion i s  measur e d  w itha scintillation c o un t er to determin e an a bs o lu t e  am oun t of the r ad ioact i ve carb o ni s o top e  14C in carbo n dioxide g e ner ated i nbio d egrada tionof the  organic co mpou nd. A rat io oft he abso l ute amo unt of  th e r adio a ct iv e c ar b oni so top e  14 C in car bo ndioxi de t o a n  abs olu te a mount  of the radio act ivec arb on is otope  14C  i n the  14C-e nrich ed  sample used is  cal culated,toth ere by  dete r mine t hebio degrada tion ra t e o ft h e  o rganic compound.
H ow e v er , in the  measu r em en t  method,  a  se ries o f mea suri n goperatio ns mus t  b eperform ed  in asp ace  pr ovide d  wit h meas ures aga instr adiation becau s e radioactive 14 C is used . T hus, the me asur e ment  met h od  ha s  prob lemsin th a t measurement of ara diatio n dos e of carbon d ioxide gen e r a ted in b iode g ra d ation requires  a lo ng periodo f time,and t hat meas urement e r r ors areobs erv edbyd i st urbance of ba c k grou nd  radioa cti vity or  th e l ike  in  m easuremen t of the  r ad ia ti ondose. Therefor e,  de ve lop mento f a me thodof m ea su r ing  a biod e gr a d atio nra te o f a  n on-na tura l  or ganic c ompound r api d ly a nd  a ccurate ly without en ri ching a me as ure ment s a m ple with  an expensive radioacti v e carbo n i sotop e 14 C and wit hou t prov idi n g anyspecia l mea su res a gains t ra dia ti on has bee n des ired.  1 . Fi eld ofthe Invention
Embo d ime nts of the in ven tion d es cri b ed her ei n  pe r t ain to the fiel d of visco us ,  t hixotropic imp re ssion m aterial s. Mo r e parti cularly,but not b ywayo f  li mitation,one or m ore embod i ments of  theinv ention  e nab le an  appar a tus , sys tem an dmethod  formi xing and  dispensing dental impr ession  mate ria ls.
2. De scr i pti on of the  Rel ated Art
D uri ngthe p rac t ice o f de n ti str y  or o rtho d ontics, i t  b eco m e snecessary f r o m  ti me to  ti m e to t akean impression ofa  patient's tee th i n ord ert o pr ov ide treatmentorto c ompletearequired pr ocedure,  s u ch as  filli ng a c avity o r fi t ting a  ret ain er. Conve nti on a lly, cr ea ti n g an o ralim pressi on isa  two s tep process, whi ch oc c u rs in a d entis tor orth o dont ist's offi ce. First,an imp ress ion o r negat iv e mold  of  t he patient ' s teeth i s cre ated. T ocrea tethe mo ld,a visco us,th ixo tropic im p r es s io nm ate rial , typ ic ally  sodium a l ginate,isp repared  b y m e a suring ap o wder (e.g. , a lgina t e  powder),a nd t h en mixin g thepowder  with a pre ci se quan tit y of waterin an ope n  co nt aine r or bow lusin ga p ad dle or spatula.  The imp ressionm a terial  is mixe d  until  s mooth and ev en in  c o nsisten c y , f orminga  pa ste , a fter  wh ichi t is put into a dental i mpre ssion tra y and  plac ed  in thep atie nt's
 an_organic compound,_a radioactive carbon isotope_14C must_be_organochemically enriched_in_a sample first._Next, the sample_enriched with the radioactive_carbon isotope 14C_is_subjected to biodegradation, and a radiation dose of carbon dioxide generated in biodegradation is_measured_with a_scintillation_counter_to determine an absolute amount_of the radioactive carbon isotope_14C in_carbon dioxide generated in biodegradation of the organic_compound._A ratio of_the absolute amount of the radioactive carbon isotope 14C_in carbon dioxide to an absolute_amount of the_radioactive_carbon_isotope 14C in the_14C-enriched sample used is calculated, to_thereby determine the biodegradation rate of_the organic compound.
However, in the measurement method,_a series of measuring operations must_be performed in a space_provided with_measures against radiation because radioactive_14C is used._Thus, the_measurement method has_problems in that measurement of a_radiation dose of_carbon dioxide generated in biodegradation requires_a_long period of_time,_and_that measurement_errors are observed_by_disturbance of_background_radioactivity or the like in measurement_of_the radiation dose.
Therefore, development of a method_of measuring a biodegradation_rate_of a non-natural organic_compound rapidly and accurately without_enriching a measurement sample with an_expensive radioactive_carbon isotope_14C and without providing any special measures against radiation has been_desired. 1. Field of the Invention
Embodiments_of the invention described_herein pertain_to_the field of_viscous,_thixotropic impression_materials. More particularly, but not by way_of limitation,_one or more embodiments of the_invention enable an apparatus,_system_and method for mixing and dispensing_dental impression materials.
2. Description of the_Related Art
During the practice of_dentistry_or_orthodontics, it becomes necessary from_time to time to take an_impression of a_patient's teeth in order to provide treatment_or_to complete a required procedure, such_as_filling a cavity or fitting a_retainer._Conventionally,_creating an oral impression is_a two step process, which occurs_in a dentist or orthodontist's office. First, an impression_or negative mold_of the patient's teeth is_created._To_create the mold, a viscous, thixotropic impression material, typically sodium_alginate, is_prepared by measuring_a powder (e.g., alginate powder), and then mixing the powder_with a precise quantity of water in_an open container or bowl using a paddle or spatula. The_impression material is mixed until smooth and even_in consistency, forming a paste, after which_it is put into_a_dental impression tray and placed in the_patient's