Impendulo ye-IAOMT ku-National Toxicology Programme (NTP) Ibhodi Labeluleki Besayensi (BSC)

I-IAOMT Amazwana Omlomo we-NTP BSC

Sawubona, nginguDkt. Jack Kall, udokotela wamazinyo oseneminyaka engu-46. NginguSihlalo Omkhulu Webhodi Labaqondisi be-International Academy of Oral Medicine and Toxicology, noma i-IAOMT. Siyinhlangano engenzi nzuzo eyasungulwa ngo-1984.

Amalungu ethu angu-1500 angodokotela bamazinyo, odokotela nabacwaningi abaphenyayo futhi baxhumane nokwelashwa okuphephile, okusekelwe kwisayensi ukukhuthaza impilo yomzimba wonke. Isiqubulo sethu sithi “Ngibonise Isayensi”.

Okuningi okugxilwe yi-Academy yethu kube kuyi-toxicology yezinto ezisetshenziswa kudokotela wamazinyo. Siyinhlangano enkulu kunazo zonke ezinikele kulokhu. Sigxile kakhulu ezintweni ezintathu ezinobuthi ezivame ukusetshenziswa kudokotela wamazinyo:

1. I-mercury, i-neurotoxin, esetshenziswa ekugcwalisweni kwe-amalgam
2. bisphenol A, isiphazamisi se-endocrine, esisetshenziswa kuma-sealants kanye nokugcwalisa okuyinhlanganisela
3. i-fluoride esetshenziswa kumarinse, umuthi wokuxubha, amavarnish, usimende nezinto zokugcwalisa

Zonke lezi zifakwa ngqo emlonyeni. Ukwengeza, i-fluoride isetshenziswa ezindleleni zokungeniswa ngokuqondile ngendlela yamanzi okuphuza ane-fluoridated, usawoti we-fluoridated, kanye nezithako ze-fluoride.

Ngaphezu kweminyaka engama-30 inhlangano yethu ibilokhu ixhasa futhi ixhasa ngezimali ucwaningo ngobuthi be-fluoride. Sibe nentshisekelo ngokukhethekile futhi sikhathazeke kakhulu ngezifundo ezisanda kushicilelwa mayelana nobuthi be-neurotoxicity ye-fluoride futhi ngenxa yalokho sisekela ukubuyekezwa okuhlelekile kwe-NTP.

Sidumele ngokuthi izithakazelo zamazinyo ezikhuthaza i-fluoridation kokubili kuhulumeni wobumbano nangaphandle kwawo, bezizama ukuthonya okutholwe yi-NTP, hhayi ngokusekelwe kusayensi, kodwa ngomzamo wokuvikela inqubomgomo yabo yokukhuthaza ukugeleza kwamanzi.

Yiziphi izinto ezibalulekile ezitholwe yi-NTP?

1. Lobo bufakazi besifo somuntu busekela isiphetho “sokuzethemba okusesilinganisweni” sokuthi i-fluoride iyi-neurotoxin ethuthukayo. (Umbiko we-BSC WG ikhasi 342)
2. Ukuthi awukho umkhawulo wokuchayeka okuphephile otholakalele umphumela we-fluoride ku-IQ. (Umbiko we-BSC WG amakhasi 87, 326, 327, 632, 703, 704)
3. Lokho kuvezwa kwe-fluoride okutholwa abesifazane abakhulelwe nezingane e-US namuhla kungaphakathi kwebanga lapho izifundo zabantu zithole i-IQ encishisiwe. (Umbiko we-BSC WG amakhasi 25, 26)

Lo mbiko uhlinzeka ngemininingwane eminingi ngezifundo zabantu ezingaphezu kuka-150 ezihlonzwe njengezibalulekile.

Umbiko usebenzise izindlela eziqinile, ezimiswe ngaphambili ukuze ukale ikhwalithi yezifundo ngazinye.

I-IAOMT ivumelana neziphetho ze-NTP.

Sikholelwa ukuthi i-monograph bekufanele ishicilelwe ngosuku okwakuhloswe ukuthi ikhishwe ngalo esidlangalaleni ngomhla ka-18 Meyi 2022. Izinguqulo ze-NTP ezenziwe ngemuva kokuthi zivinjelwe ukuhlukaniswa okuphromotha i-fluoridation ngaphakathi kwe-HHS, futhi izibuyekezo eziphakanyiswe yiqembu elisebenzayo le-BSC ngeke ziguqule okutholakele okubalulekile. Noma yikuphi ukubambezeleka okwengeziwe ekumemezeleni umbiko wokugcina akulungile.

I-IAOMT yethemba ukuthi i-BSC izowusekela umzamo omangalisayo owenziwe ochwepheshe besayensi be-NTP kulokhu kubuyekezwa okuhlelekile. Sivumelana nababuyekezi ontanga bangaphandle abanikeze lawa mazwana:

"okwenzile kusezingeni eliphezulu"

"Ukuhlaziya ngokwako kuhle kakhulu, futhi ukuphendule kahle ukuphawula"

"Wenze kahle!"

“Okutholakele… kwahunyushwa ngendlela efanele”

Kusukela ekubuyekezweni ngokucophelela kobufakazi bokuhlobana phakathi kwe-fluoride ne-caries yamazinyo (ukubola kwamazinyo), i-IAOMT isiphethe ngokuthi ukusebenza kahle kudlulele kakhulu esimweni sanamuhla sezempilo yomlomo. Amazwe ane-fluoridation nalawo angenayo womabili abe nokwehla okumangalisayo kokubola kwamazinyo eminyakeni engu-50 edlule, njengoba kuboniswe kule grafu ngokusekelwe kudatha ye-WHO:

Uhlolo lwakamuva olukhulu lwe-fluoridation yomphakathi, olwenziwa eNgilandi, luthole kuphela umehluko wemigodi engu-0.2 ingane ngayinye emazinyweni engane. Ayitholanga inzuzo ephawulekayo ngokwezibalo nhlobo emazinyweni ahlala njalo. Ucwaningo lwenziwe yiPublic Health England, umgqugquzeli ohamba phambili we-fluoridation eNgilandi. Nokho ababhali balolu cwaningo baze baphetha ngokuthi izinzuzo “zincane kakhulu kunocwaningo lwangaphambili olwalusikiselwe” nokuthi i-fluoridation ayizange ikunciphise ukungalingani kwempilo yamazinyo phakathi kwezingane ezimpofu nezicebile.

Ngisho ne-US CDC iyavuma ukuthi abukho ubufakazi bokuthi i-fluoride yangaphambi kokubeletha kumama okhulelwe noma osana ngaphambi kokuba amazinyo aqhume inikeza noma iyiphi inzuzo yamazinyo. Lezi yizikhathi zokuchayeka lapho ubufakazi bokuthuthuka kwe-neurotoxicity buqine kakhulu.

Isisekelo senqubomgomo yezempilo yomphakathi eyaziwa ngokuthi umgomo wokuqapha kumele kubhekwe futhi. Isisekelo esiyisisekelo sale nqubomgomo sakhelwe phezu kwesifungo sezokwelapha esinamakhulu eminyaka ukuthi “kuqala, ungalimazi.” Nokho, ukusetshenziswa kwanamuhla kwesimiso sokuqapha empeleni kusekelwa isivumelwano samazwe ngamazwe.

NgoJanuwari 1998, engqungqutheleni yamazwe ngamazwe ehilela ososayensi, abameli, abenzi bezinqubomgomo, kanye nezazi zemvelo ezivela e-US, Canada naseYurophu, isitatimende esisemthethweni sasayinwa futhi saziwa ngokuthi "Isitatimende Se-Wingspread on the Precautionary Principle."530 Kuso, isitatimende esisemthethweni sasayinwa kunikezwa iseluleko esilandelayo: “Lapho isenzo siphakamisa izinsongo zokulimala empilweni yomuntu noma endaweni ezungezile, kufanele kuthathwe izinyathelo zokuphepha ngisho noma ubuhlobo obuthile bembangela nomphumela bungamiswa ngokugcwele ngokwesayensi. Kulo mongo umgqugquzeli womsebenzi, esikhundleni somphakathi, kufanele athwale umthwalo wobufakazi.”

Akumangalisi ukuthi isidingo sokusetshenziswa okufanele kwesimiso sokuqapha siye sahlotshaniswa nokusetshenziswa kwe-fluoride. Ababhali bendatshana yango-2006 enesihloko esithi “Isho Ukuthini Isimiso Sokuqapha Ngodokotela Wamazinyo Osekelwe Ebufakazini?” iphakamise isidingo sokulandisa ngokuchayeka okwandayo okuvela kuyo yonke imithombo ye-fluoride nokuhlukahluka kwenani labantu, kuyilapho futhi ithi abathengi bangafinyelela amazinga “afanele” e-fluoridation ngaphandle kokuwaphuza amanzi ane-fluoridated. Ukwengeza, abacwaningi bokubuyekezwa okushicilelwe ngo-2014 bakhulume ngesibopho sokuthi isimiso sokuqapha sisetshenziswe ekusetshenzisweni kwe-fluoride, futhi bathatha lo mqondo isinyathelo esisodwa lapho bephakamisa ukuthi ukuqonda kwethu kwanamuhla kwe-caries yamazinyo "kunciphisa noma iyiphi indima enkulu yesikhathi esizayo i-fluoride ekuvimbeleni i-caries."

Ngivala ngesimo se-IAOMT ku-fluoride:

“Kafushane, uma kubhekwa inani eliphakeme lemithombo ye-fluoride kanye namazinga akhuphukayo okusetshenziswa kwe-fluoride kubantu baseMelika, akhuphuke kakhulu kusukela kwaqala ukugeleza kwamanzi ngawo-1940, sekuyisidingo sokunciphisa nokusebenza ekuqedeni imithombo egwemeka ye-fluoride. ukuchayeka, okuhlanganisa i-fluoridation yamanzi, i-fluoride equkethe izinto zamazinyo, neminye imikhiqizo ene-fluoridated.