E toru nga huarahi hei hono i te karauna me te taapiri o te whakaurunga niho

Kua rongo katoa tātou mō ngā whakatō niho, engari mō te hanganga o ngā whakatō niho, e kiia ana he tokomaha te hunga kāore i te mōhio nui ki tēnei mea. Inaa, ehara ngā whakatō niho i te whakatō katoa, engari e toru ngā wāhanga: te pakiaka, te abutment, me te karauna. He taahiraa nui te hononga i waenga i te karauna me te abutment i roto i te pokanga whakatō. He mea nui te kounga o te hononga ki te angitu, ki te kore rānei o te whakatō, nō reira, me pēhea te hononga o te karauna me te abutment o te whakatō?

E toru ngā momo hononga e whakamahia whānuitia ana:

(1) Te Hononga: Whakamahia te sima konutea phosphate, te kapia whakaora-ake, me ētahi atu hei whakapiri i te hanganga o runga ki te abutment o te whakatō. Mena ka whakauruhia te niho rūpahu ki te hanganga o runga i tēnei wā, ka hangaia he karauna pumau me te whakaora piriti. Ko te painga o tēnei tikanga hononga he ngāwari ki te whakahaere, ā, he pai te pānga pupuri. Ko te ngoikoretanga, ina puta he raruraru, me whakangaro te whakaora i mua i te wetewete.

(2) Hononga pūtu: Ka herea te hanganga o runga ki te hononga whakatō mā roto i ngā pūtu kua oti te hanga. Kāore e taea e te tūroro te tango atu me te mau ko ia anake. Ka taea te mahi pērā i te niho rūpahu kua mau. Ina puta he raruraru, ka taea e te tākuta te tango, ā, ka taea te tango i ia wā hei horoi pai i te kapia.

(3) Hononga tango: Ka whiwhi te niho rūpahu i te kaha pupuri mā te karauna takirua, ngā momo tāpiringa (topenga pae, awa pūtu, topenga pōro), ngā tāpiringa aukume, me ētahi atu. Ka taea e te tūroro te mau i a ia anō kia huri hei niho rūpahu tango. He maha ngā wā me piri tonu tētahi wāhanga o te pupuri ki te abutment i runga i te āhua pumau.