No independent scientific examination of the relic has ever been permitted. Its identification rests entirely on transmitted religious tradition, not on physical testing.
What would resolve this Non-destructive material analysis, such as micro-CT or isotopic testing, of the relic, if Sri Dalada Maligawa ever permitted an outside examination.
OpenArchaeometry, Buddhist studiesSri Dalada Maligawa, Sri Dalada Maligawa, The Temple of the Sacred Tooth Relic (official site)