teeth - 2026 ACF Regionals

Packet B: Tossup 10

The Shield system classifies a diseased form of these structures caused by a defective sialophosphoprotein (“sialo-phospho-protein”) named after one of its substructures. A hypoplasia of these structures is associated with stunted Retzius stria (10[1])due to (10[1])reduced ameloblast (“uh-MEL-oh-blast”) activity. A part (10[1])of these structures is capped by materials like zinc oxide eugenol and mineral trioxide aggregates. (10[1])Defects in the epithelial (10[1])rests of Malassez can cause masses to form in these structures’ cementum layer. (10[4])These structures (10[2])are damaged (10[1])by (10[2])Streptococcus (10[1])mutans (10[1])biofilms (10[2]-5[2])that secrete (10[2]-5[1])dextran (10[2])and lactic (10[3])acid. (10[3]-5[2])These (10[3])structures (10[1])can (10[1])be repaired (10[1])using nano-hydroxyapatite (10[2]-5[3])therapy. (10[6])Epoxy-bound (10[2])gutta-percha (10[1])is used (-5[1])to fill these structures’ (10[1])pulp (10[1])chambers. (10[4])For 10 points, (10[1]-5[1])name these structures (10[1])that are disinfected in root (10[1])canal treatments. (10[3])■END■ (10[14]0[2])

ANSWER: teeth [or tooth; accept incisors or canines or molars or premolars; accept specific parts of the teeth like cementum or dentine or enamel or pulp until read; accept tooth cavities or tooth caries; accept pulp chambers until read]

<City St Georges A, Biology> | Packet B - Queens A, UCLA B, Edinburgh B, St. Georges A

= Average correct buzzpoint

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Buzzes

Player	Team	Opponent	Buzzpoint	Value
Rohan Ganeshan	Harvard A	Yale	31	10
Jacob Goodson	Ohio State C	Michigan C	33	10
Moses Kitakule	Columbia A	NYU A	38	10
Caleb Ott	Waterloo A	Toronto C	53	10
Nathan Long	Imperial B	Warwick B	57	10
Russell Nip	UBC A	Guelph	70	10
Jason Thieu	Michigan State	Michigan A	70	10
Surya Dinesh	MIT	Dartmouth A	70	10
Braxton Davis	Missouri A	Washington B	70	10
Tiffany Zhou	Ohio State A	CWRU B	72	10
Ilyas Choukri	Virginia Tech A	James Madison B	72	10
Thomas Tibbetts	Central Florida C	Central Florida A	74	10
Ava Butler	McGill A	McMaster B	75	10
Brendan Bethlehem	Cambridge A	Manchester	75	10
Eric Morshed	Johns Hopkins A	John Jay	76	10
Peter Smith	Binghamton A	Cornell B	77	10
Ariel Faeder	Pittsburgh	Ohio State B	78	-5
Eric Yang	Purdue A	Northwestern D	78	10
Snehan Saroch	Louisville A	Tennessee B	78	10
Mia Clark-Webb	Oxford C	Southampton A	78	-5
Rachel Fanous	Michigan B	CWRU A	80	-5
Chris Yoo	William and Mary	Liberty B	80	10
John Marvin	Chicago A	Notre Dame A	80	10
Ethen Sun	Toronto D	UBC B	81	10
Fern Fang	VCU	North Carolina A	81	10
Ethan Bosita	Stanford B	Berkeley D	83	10
Ethan Ma	Illinois C	Notre Dame B	83	10
Charles Hang	WashU A	Georgia Tech C	83	10
Khanh Nguyen	Florida C	Florida A	84	-5
Emily Justak	Indiana C	Chicago D	84	-5
Cooper Stringer	Northwestern C	Indiana B	84	10
Bryce Cruise	Texas A	Texas B	84	10
Ali Hamzeh	Edinburgh A	Birmingham	84	10
Vivian Malouf	Berkeley A	Berkeley C	85	10
Adil Haider	McMaster A	McGill B	85	10
Teigue Kelly	Penn State	Cornell A	85	10
Krishna Girish	Montpellier	Southampton B	86	10
Michał Gerasimiuk	Stanford A	Berkeley B	87	10
Nihal Jacob	Kentucky	Tennessee A	89	10
Jay Misuk	Western C	Toronto F	91	-5
Jiping Fang	Illinois B	Chicago B	91	10
Charles Johnson	Texas A&M A	Murray State A	91	-5
Sophie Lyman	WashU B	Mississipi State	91	10
Daniel Craig	Rutgers B	Johns Hopkins B	91	-5
Samuel Lipsutz	Chicago E	Northwestern B	92	10
Annika Larson	Claremont	Carleton College	92	10
Beck Faletti	Washington A	Georgia Tech A	92	10
Tianyu Xu	Georgia Tech B	Bruin	92	10
Davin Sivertson	Alabama B	Vanderbilt B	92	10
Chauncey Lo	Columbia C	Rutgers A	92	10
Liam Rojas	Virginia	South Carolina A	93	10
Andy Yu	Maryland A	Maryland B	93	10
Dillon George	Catholic	Georgetown	94	10
Sam Kemeny	Brandeis B	Dartmouth B	96	-5
Omkar Marathe	Columbia B	Swarthmore	100	10
Emily Kadolph	Virginia Tech B	NC State B	101	10
Dawson Teu	Waterloo B	Western A	102	10
Alex Akridge	Indiana A	Chicago C	102	10
Chris Dech	Brandeis A	Bowdoin B	102	10
Kanyon Beck	Murray State A	Texas A&M A	102	10
Sean Gao	Toronto E	Carleton University	105	10
Noah Fine	North Carolina B	Liberty C	105	-5
Monish Jampala	Georgia Tech D	Alabama A	108	10
Harri Slaughter	Cardiff	Warwick A	113	10
Ishan Joshi	Toronto Metropolitan	Simon Fraser	115	10
Elizabeth Larkin	Cornell C	RIT	115	10
Jordan Parker-Martin	Rochester	Binghamton B	115	10
Raymond Chen	Toronto B	Toronto G	116	10
Saju Ramraj	Toronto F	Western C	116	10
Nicholas Cuevas	Florida B	Central Florida B	116	0
Peyton Legg	Central Florida B	Florida B	116	0
Pace Klein	CWRU A	Michigan B	116	10
Aditya Patnaik	Ohio State B	Pittsburgh	116	10
Samanyu Dixit	North Carolina C	Duke	116	10
Katie Young	Liberty C	North Carolina B	116	10
Connor Ronan	South Carolina B	NC State A	116	10
Erin Williams	James Madison A	Wake Forest	116	10
Mats Miller	Chicago D	Indiana C	116	10
Mason Yu	Brown	Bowdoin A	116	10
Joel Miles	Minnesota A	Missouri B	116	10
Benedykt Chodzko-Zajko	Southampton A	Oxford C	116	10
Aiden Bang	Johns Hopkins B	Rutgers B	116	10
Ezra Siegartel	Vassar	Maryland C	116	10
Jake Markus	Dartmouth B	Brandeis B	134	0

Summary

Tournament	Edition	Match	Heard	Conv. %	Neg %	Avg. Buzz
California (North)	Main Site	✓	3	100%	0%	85.00
Canada	Main Site	✓	10	100%	10%	91.80
Florida	Main Site	✓	3	33%	33%	74.00
Great Lakes	Main Site	✓	5	100%	40%	81.40
Lower Mid-Atlantic	Main Site	✓	9	100%	11%	99.00
Midwest	Main Site	✓	8	100%	13%	90.75
Northeast	Main Site	✓	5	80%	20%	79.75
Overflow	Main Site	✓	4	100%	0%	92.50
South Central	Main Site	✓	2	100%	50%	93.00
Southeast	Main Site	✓	7	100%	0%	90.43
UK	Main Site	✓	6	100%	17%	88.50
Upper Mid-Atlantic	Main Site	✓	8	100%	13%	90.63
Upstate NY	Main Site	✓	4	100%	0%	98.00